Photos - No Longer Identifies as "System Library"

I accidentally deleted my Photos library (~25GB). Shortly after, I realized my mistake and restored the library from TimeMachine.

All the photos are there, no loss of images.

However, the library is no longer designated as my “System Photo Library” ?

If I open Photos and use Preferences, I get very nervous about clicking that button. How will that affect my iCloud Photos?

How should I proceed?

Nervous and Appreciative of Suggestions…

I did (re)setup my library that way because i did started my new Mac mini as a fresh maschine. No problems, old photos did not get reuploaded.

You need to click the button. Take a backup of your library first, just in case

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Thanks. I clicked. No disasters ensued. :smile:

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