In the 6.1.3 version of IBDAC, every subsequent call to ANY non-active IBCQuery, closes ALL Queries, that have been open before, and use the same transaction, which is in my case default transaction on the database.
i.e. I have an IBCQuery named qRE2, which is already opened (qRE2.state = dsBrowse).
Then I use:
if not qENT.Active then qENT.Open; <== in this moment, qRE2.state goes to dsInactive, qENT.state goes to dsBrowse.
if not qTIP.Active then qTIP.Open; <== here we just lost qENT, went to dsInactive, whereas qTIP is dsBrowse. We have qRE2 and qENT nof with state = dsInactive ...
I needed a couple of days to figure this one out ... am not too happy about it, either.
I had to revert to 6.0 version, which works fine.
Delphi 10.2, FB 2.5
I hope that you'll sort it out fast, as You do most of the times when such things happen...
Best regards,
Davor.
PS: please, keep me posted about the fix! Thanks!