I’m not really sure why the apps still need to be associated with a pool under EE because they no longer use ix-applications and all the data is stored in /mnt/.ix-apps
Finally having time to come back to this and needing to get something done one way or the other since the drives are starting to show unreadable sectors. I followed the guide by Stux and it worked like magic. Hopefully someone can build that into a script or wizard in the gui so that you simply select the old pool and the new pool and it handles the rest. Thank you @Stux for the effort in helping us gain back the functionality of moving pools.