1PW7 tagging between Windows and Mac version

@Superfandominatrix: First, I'm really sorry to hear about the death in the family. I know what it's like to lose a machine I depended on. On the plus side though, it's sometimes nice to have an excuse to get something new. And, while it sounds like you won't be spending as much time on the Windows side for a bit, you've already provided tons of great feedback on the beta, so thank you for that! :)

1) May I safely delete the old 1Password.agilekeychain in Dropbox since I seem to be on the new opvault without issue?

I would hang onto it for a bit. It's probably not very big, and it's better to be safe than sorry. Consider moving it out of Dropbox though, just to avoid confusion, and back it up somewhere safe just in case. You have been using prerelease software after all.

2) May I safely delete the old 1Password.opvault.backup directory in Dropbox (not the back up stored in /Users/airvanilla/Library/Application Support/1Password 4/Backups)?

As long as you have the original vault and a current backup for your data somewhere safe (offsite is best), that's fine. I tend to keep way more backups than I think I need though because I am terrified of finding that my backup is no good and not having another to fall back on.

3) In the Windows version, I had invested a bit of time setting up nested tags. These nested tags are not appearing correctly on the Mac version, rather each sub-tag is a tag outright at the top tag level. Is that normal behavior? Or do I need to do something on the Mac version to have the Windows version tagging appear correctly?

Aha! It sounds like you've been so busy with the Windows beta that you missed the Mac beta! Definitely check that out. Version 6 does not support nested tags, but version 7 sure does. ;)

(An unrelated FYI: when I restored data from CrashPlan and Dropbox, OMG, the number of crap files created inside the 1PW vault and elsewhere was a nightmare. Each file had a duplicate file original1.***, and sometimes a ***dropbox.atttributes or *dropbox.attr file. The vault looks to be cleaned up now and working well after _carefully_ deleting the garbage files.)

Huh. Maybe this is a quirk of CrashPlan restoring to one platform to another. I haven't encountered that myself. Those doesn't seem to be at all related to 1Password, but are probably metadata that is normally hidden in the OS. Both Windows and macOS have stuff like like this. Glad you were able to sort it out though! :)

On behalf of Brenty and the team here, you're welcome. Let us know if there's anything else we can help with.