Probably conflict with exclusive shares while changing them to non-exclusive without stopping docker/array

My share "appdata" used my "cache" pool as an exclusive share. Now I wanted to replace the SSD of the "cache" pool against a bigger one. So I changed (without stopping the array) the "appdata" share configuration from:

to:

After that I started the mover and several hours later my nextcloud was broken (could not access relevant files). This was solved by rebooting the server.

I assume that inside of the nextcloud container the mount to the exclusive share was still present, so it should not be possible to change this setting while docker is active. Sadly I didn't tested it inside of the Nextcloud container so I can't deliver the proof, but this seems to be the only plausible reason for me.