What am I meant to do with offline items?

I think I may have found and fixed the cause (at least in my use case). I noticed items started going into the "offline" bucket around 5/25. It was about this time that I upgraded my iPhone. The prior one was wiped, without a proper uninstall of 1password.

The following is my theorizing on the inner workings of 1password. My guess is that since my prior phone was still registered as one of my authorized 1password devices, 1password was still expecting to be able to sync to it.

I went to my authorized devices within my 1password profile and blew all auth'd devices away (clearly overkill but I didn't want to search for every instance of my old phone). I then uninstalled/reinstalled every instance of 1password (windows app, firefox add-on, iphone and ipad). There is no more "offline" bucket and all items in the offline bucket synchronized.

Again, this may only be the cause/fix in my particular case. But thought I'd share in case it helps with troubleshooting.