Inconsistent Ability to Move Files from One Folder to Another in Latest DTTG Update

I’ve always been able to easily move files within a database. With the latest update of DTTG a few days ago, I’m now only able to do this some of the time. I can’t see a rhyme or reason to the inconsistency — attempted moves are always within the same database.
Reading old threads, I did reboot my iPad Pro and moved the next half dozen files very easily, but now I’m having trouble again. The message I get is “unable to move item to this destination.”
Thanks in advance for help with this.

Is this a shallowly synced file, i.e., it has the small cloud property icon in the details and the icon is lighter?

Hi. It’s not synced at all. I’ve switched to just using DTTG on my iPad Pro and not using my DT Pro at all until I buy a new desktop machine. That’s not new for me. It’s been the case for about a year now.

On DEVONthink To Go’s databases screen, select ? > Contact Us to start a support ticket. Thanks!