I moved sync target on my desktop from a Nextcloud provider to Dropbox. That went fine. For mobile, should I just select Dropbox and sync, or should I delete the Joplin database on the mobile device first and then select Dropbox and sync?
Theoretically since both desktop and mobile were synced prior to moving sync target on desktop, both sync servers should hold identical datasets, so first sync with mobile device shouldn't result in any data changes. Not sure if it works like that in practice.
If I delete the Joplin db on mobile, then of course there's nothing that could go wrong as there is only one dataset (that on the server) in the sync.