I discovered this property "UpdateMode" :-) :-) :-)

Now I'm trying to figure out how to use it ... And what is its purpose ...

I found little explanations on the site of Embarcadero and I think that it could be useful in a competing environment when you want to change a record and to be sure what it was not changed.. In my case, my database has a single access...

By default, CachedUpdatesUpdateModeEdit is set to UpWhereAll. I set it to upWhereKeyOnly and my application works fine again ...