Time Machine: "Oldest backup: None," "Latest backup: None" after temporarily changing backup disk
I've been using an external USB hard drive attached to my iMac shared over the network as my MacBook Time Machine. I was testing if I could do something similar using my Windows desktop as the server. In doing so, I had to change my Time Machine disk in my MacBook's Time Machine settings. I'm done testing and now I want to go back to using my iMac as the server, but when I select the disk, it shows as the title suggests. When I open the backupbundle file, I can see the all of the backups are there, but it seems that my MacBook TimeMachine app is not detecting them.
I've tried "Verifying Backups" but nothing changes.
I presume if I start a backup, it'll make a whole backup instead of an incremental one, which is undesirable.
What should I do?