Michel,

I guess that technically it is *not* a "bug".
But at the very least it is:
1) a very stupid way to handle something;
2) missing from the product documentation.

Regards,
Jim N

>
>No, it's not a bug. To avoid loosing the grid preferences, you may try setting the RecordSource to blank before and resetting it to the old value after the ZAP. I don't know if this is related but sometimes, some command will reset the grid preferences. This might help in this case.