Interesting. I assume it has to do with how/when FM commits the record. To you use Insert picture you have to actually have clicked into the field to make it active. The field then remains active once the insert has happened the field remains active and the record is not committed, hence revert is available. If the field is active when you drag and drop (ie. your cursor is in there) revert will be available, but it is also possible to drag and drop into an inactive container, in which case the field remains inactive and record commit appears to take place on the fly without the field becoming active.