Comment 12 for bug 678632

Bruno, exactly.

Just to clarify, I'm not the original reporter, but I can understand the issue. Also, a friend ran into this, as she "works" in the NFS-mounted directory that has backups etc etc, but there is no reason to send the "temporary" nona remapped images over the network (back and forth).

Anyway, yes, the temporary files stop being temporary when you indicate you want to keep them.
And by that time, the storage space in the current directory needs to be there anyway, if they don't fit, there is no way to make them fit.