the best is to import all your records into a clone of a backup...
if you haven't a good backup, try to make a clone of this DB and import from it all the records.
I have essentially the same problem as indicated above although I can't even get to the record so have no idea if it's filled with ? marks or not. Everytime I attempt to navigate to that particular record, FM crashses. I've attempted the clone solution but upon every attempt to import FM crashes. I've tried to turn of the indexing, restart, etc. etc. but to no avail. Any suggestion?