I had to replace my laptop after its battery died and bricked despite Apple installing new battery. Roll Mac Mini – I elected a fresh Roon install creating a new Roon Core/DB because my HDD content was intact. Good news all there and installed in Roon library. Bad news the albums are now fragmented and need to be [re]consolidated into single album in library. IDK how to do that (too many to do album by album) and was hoping there was solution known to the community in Roon library/file management. Thanks in advance. Mark
P.S. I ended up buying an hour of my audio guy’s time who solved the problem of the Roon app seeing the HDD but not importing same – it required (for others’ benefit) a deep dive into the settings of Tahoe iOS, Mac Mini settings, and Roon settings – mostly authorizing folder/file and device sharing so that the OS, MM, and Roon were open for business, to enable the import through Roon Storage Settings interface.
Restore a backup of your Roon database during migration and normally everything should be back as it was before
was not able to do that, had to do a fresh install so my earlier efforts at consolidation of multiple audio files into single “album” apparently went by the board and need to see if there is any method to do so in “batch” if i could have migrated the DB from the defunct laptop would have done that. learned my lesson….thanks for the input.
Sorry to hear that. Another reason to back up to a different device, but I know it’s too late for now.
Other than that, I don’t know of any easy way to do this in batches, though I’m also unsure why they are broken up in the first place. If your file tags are in order (all tracks being stored in one folder and the artist and album names the same) this should normally happen automatically, but I suppose you may have made such fixes originally in Roon, in which case I suppose you have to redo it 
Perhaps it is less work to use a file tag editor and do it in the file tags. Good editors can automate many such actions, more than Roon can.