Will my encrypted database be corrupted during sync to cloud drive if it is open?

Thanks for that feedback. @MAM I initiated a thread on backups some while back, describing my methods. Numerous others chipped in. I have at least monthly backups of closed databases to Arq and WORM media, with regular backups of open databases to Arq, CCC and TM. In my tests, open databases were always intact on restore. That is no guarantee, of course, but leaves me hopeful.