TM has files but they are not listed on entering Time Machine
I have a Mac backing up to Time Machine on OS X Server (not that I think that's relevant).
I needed to restore some files from January but on entereing TM it only had backups for the last couple of days. The TM volume on the server was nearly full so perhaps that wasn't unexpected. However I have been able to recove the 'lost' files by mounting the sparseimage within which are files going back over a much longer period.
Why was TM on my Mac not 'seeing' all the backed up files more than a couple of days?
I have now moved the TM backup files to a new, larger, volume. TM appears to want to create a new backup and shows "none" under "oldest backup" in the Preferences. How can I force TM to see my original and older backups? I am pointing TM at the correct shared volume and all permissions are set corectly on the server as far as I can tell.
Thanks!