The front end data and back
end data exist as two different snapshots of the database. When
you forward or back annotate, these snapshots are synchronized.
Situations might arise where changes to each snapshot conflict (adding
the same logical part to each snapshot but with different reference
designators; deleting an object, connectivity, or constraint in
one snapshot, and editing it in the other).
In the event of a conflict
during a forward or back annotation, you must specify which gets priority.
In PADS Designer, you can specify this priority with the Setup > Settings dialog
box under the Project > Designs > <Name of Design> tree
item. You can set Conflict resolution to either
Front end always wins or Back end always wins.