Time Machine: If I connect a new drive for a backup off site, can I go back to my old drive?

Time machine will lose all memory of my previous backups so I redirect temporarily Time Machine on a fresh hard drive, backup the entire disk for storage off-site and then reconnect the original hard drive? Obviously, this isn't something I can just 'try' and risk losing the value of a year of backups. Please tell me if this can be done safely. Thanks in advance.

I do it on 2 computers on a regular basis to have off-site backups and have never had any problem when to return for the local backup drives.

Tags: Mac OS & System Software

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