# Be careful when using Ctrl + Z **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [July 8, 2019, 5:40pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274 "2019-07-08T17:40:34Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![eoinparkinson](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eoinparkinson/32/143769_2.png) [@eoinparkinson](https://community.thunkable.com/u/eoinparkinson)\ **Post date:** [July 8, 2019, 5:40pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/1 "2019-07-08T17:40:34Z")
I made a horrible mistake. In short, I pressed Ctrl+Z a good few times and wham, all my blocks on that screen are gone. All gone. After reload they don’t come back. Do not make this mistake, and please developers look into this. Luckily for me I made a copy of the app, maybe this is the reason it broke? It is still something that needs urgent attention! ---
**Author:** ![BlueWhaleYT](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/bluewhaleyt/32/28437_2.png) [@BlueWhaleYT](https://community.thunkable.com/u/BlueWhaleYT)\ **Post date:** [July 9, 2019, 3:25am UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/2 "2019-07-09T03:25:54Z")
Were you careless to click Ctrl + Z? Ctrl + Z is a function, which undos all the actions. Actually, a lot of software or platform has been built-in this function. ---
**Author:** ![kartik\_old](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/kartik_old/32/28305_2.png) [@kartik\_old](https://community.thunkable.com/u/kartik_old)\ **Post date:** [July 9, 2019, 5:08am UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/3 "2019-07-09T05:08:53Z")
Try Right click and undo ---
**Author:** ![eoinparkinson](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eoinparkinson/32/143769_2.png) [@eoinparkinson](https://community.thunkable.com/u/eoinparkinson)\ **Post date:** [July 9, 2019, 10:41am UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/4 "2019-07-09T10:41:30Z")
Ctrl+Z for me anyway is undo. I pressed it maybe 4 or 5 times to undo many blocks. but not all of them. ---
**Author:** ![kartik\_old](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/kartik_old/32/28305_2.png) [@kartik\_old](https://community.thunkable.com/u/kartik_old)\ **Post date:** [July 9, 2019, 11:46am UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/5 "2019-07-09T11:46:48Z")
> [@eoinparkinson](#): > > Ctrl+Z for me anyway is undo it’s universal… 😅 ---
**Author:** ![maxb](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/maxb/32/35200_2.png) [@maxb](https://community.thunkable.com/u/maxb)\ **Post date:** [July 9, 2019, 12:17pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/6 "2019-07-09T12:17:41Z")
Same heppened to me and I started crying in a corner but luckily when I opened the app back the blocks were still there, try to close and reopen ---
**Author:** ![eoinparkinson](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eoinparkinson/32/143769_2.png) [@eoinparkinson](https://community.thunkable.com/u/eoinparkinson)\ **Post date:** [July 9, 2019, 12:18pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/7 "2019-07-09T12:18:05Z")
Its just strange how it deleted everything though ---
**Author:** ![eoinparkinson](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eoinparkinson/32/143769_2.png) [@eoinparkinson](https://community.thunkable.com/u/eoinparkinson)\ **Post date:** [July 9, 2019, 12:18pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/8 "2019-07-09T12:18:19Z")
> [@maxb](#): > > Same heppened to me and I started crying in a corner but luckily when I opened the app back the blocks were still there, try to close and reopen Ahaha. Lucky for you then 😛 ---
**Author:** ![BlueWhaleYT](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/bluewhaleyt/32/28437_2.png) [@BlueWhaleYT](https://community.thunkable.com/u/BlueWhaleYT)\ **Post date:** [July 9, 2019, 12:39pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/9 "2019-07-09T12:39:42Z")
You clicked 4 or 5 times cause you seen not have any changed so action it? ---
**Author:** ![eoinparkinson](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eoinparkinson/32/143769_2.png) [@eoinparkinson](https://community.thunkable.com/u/eoinparkinson)\ **Post date:** [July 9, 2019, 12:44pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/10 "2019-07-09T12:44:26Z")
No, It was removing block by block fine, and I had a few more blocks that were placed to undo and bam, everything is gone ---
**Author:** ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)\ **Post date:** [July 9, 2019, 12:51pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/11 "2019-07-09T12:51:05Z")
On a lot of platforms you can use Ctrl + Shift + Z (Windows) or ⌘ + ⇧ + Z (Mac) To **redo** , or undo the undo, if that makes sense? ![undo_redo](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/e/f/ef7c5a3ee6b07e46ebbe4f8cff1c28c7ca9e88d7.gif) ---
**Author:** ![eoinparkinson](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eoinparkinson/32/143769_2.png) [@eoinparkinson](https://community.thunkable.com/u/eoinparkinson)\ **Post date:** [July 9, 2019, 12:53pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/12 "2019-07-09T12:53:06Z")
But I am still confused as to why everything just goes. And I mean gone. I refreshed browser. Cleared cookies and cache because why not, and nothing. I had a previous copy from it, which is what I do a lot cos sometimes I don’t trust mainly myself or the platform to keep my work safe 🤷‍♂️ ---
**Author:** ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)\ **Post date:** [July 9, 2019, 12:58pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/13 "2019-07-09T12:58:45Z")
> [@eoinparkinson](#): > > Cleared cookies and cache because why not, and nothing. That seems a bit…extra??? 😂 If you do a hard refresh like this then you will loose your undo/redo history so you won’t be able to recover any accidentally deleted blocks. In most cases blocks should be “recoverable” but it seems like you’ve found something of an edge case here Eoin I think! ---
**Author:** ![eoinparkinson](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/eoinparkinson/32/143769_2.png) [@eoinparkinson](https://community.thunkable.com/u/eoinparkinson)\ **Post date:** [July 9, 2019, 1:01pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/14 "2019-07-09T13:01:40Z")
Mhm, well out of the couple hundred projects I have created and deleted and what not, this is the first time something like this has happened, and I was prepared (ish) 😛 I always save a copy of my projects. Especially if I am adding a big new feature. I save the old one as a working version. Of course doing this is fine for me as none of the projects are actually released to the public. I know Google is picky about how you must have the same app and signature whereas apple just want the same signature, so yeah. ---
**Author:** ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)\ **Post date:** [July 9, 2019, 1:08pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/15 "2019-07-09T13:08:39Z")
> [@eoinparkinson](#): > > I always save a copy of my projects. Always a good idea when working with computers! 👍 ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 12:12pm UTC](https://community.thunkable.com/t/be-careful-when-using-ctrl-z/136274/16 "2024-11-08T12:12:20Z")