Using old Time Machine Backups with new Airport Extreme

[Corrode]

Hey, searched but couldn't find an answer.

Been using Time Machine with a little USB external. Bought an Airport Extreme and wanted to do wireless backups. I plugged this into the Airport and the disk is found, but when it goes to back up, it wants to create a new Time Machine backup from scratch.

Is there any way around this? I would prefer not to delete all my old backups.

Thanks in advance for the help.

 

[JediMeister]

Wireless backups and wired backups are saved slightly different AFAIK. Backing up to a Time Capsule for example, generates a sparsebundle (like a disk image) within which is your Backups.backupsdb folder. On your USB backup volume its just a Backup.backupsdb folder. Since there is no way as far as I know for the OS to change the path and put the folder into a sparsebundle due to the changed configuration, it makes sense that it has to create a new backup...

 

[Corrode]

Wireless backups and wired backups are saved slightly different AFAIK. Backing up to a Time Capsule for example, generates a sparsebundle (like a disk image) within which is your Backups.backupsdb folder. On your USB backup volume its just a Backup.backupsdb folder. Since there is no way as far as I know for the OS to change the path and put the folder into a sparsebundle due to the changed configuration, it makes sense that it has to create a new backup...

Shoot, okay that makes sense. Can anyone confirm?