I have my Zotero set up to synch to Box via webdav. However, I'm still showing over 1G of stuff in zotero storage. Does anyone have any tips for syching all of that up to Box?
If syncing goes through with file sync set to webDAV, everything is synced through webDAV. Zotero doesn't purge server storage when you switch sync method (nor when you disable syncing). If you do want to purge the files in Zotero storage you can do so under https://www.zotero.org/settings/storage Note that webDAV syncing won't work for groups.
Upgrade Storage
https://www.zotero.org/settings/storage
Note that webDAV syncing won't work for groups.