Problem with Data Sources local table

Sorry for my google translate english …
I have a problem with Data Sources local table.
It is not possible to delete all the rows, if I do a delete row cycle the number of rows I get is 1 and not 0.
When I insert the rows I have to manage this thing, I have to do update row 1 and create row 2,3,4 …
One problem is that row 1 doesn’t work update, while it works well for the following rows.

Thanks for reporting this @daxxxithq - do you have a simple sample project that we could look at which reproduces this issue?