How can I migrate mailboxes after changing hierarchy separator?

Hi,

I had a common problem (folders can't contain dots) and the obvious solution seems to be changing the hierarchy separator and using the listescape plugin.

My question is: Do I need to take any extra steps after changing the separator to migrate my existing mailboxes? If so, which?

I tried just simply renaming the folders and doing a doveadm force-resync but that did not work as intended. Afterwards I wasn't able to subscribe to any of my folders, so I guess that isn't the way to go.

Kind regards Simon