Tips for merging an old photo backup with your current Photos library

Apple doesn’t have built-in merging tools, but you can make it work.

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Apple

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Glenn Fleishman’s most recent books include Take Control of Zoom, Second Edition, Take Control of Your M-Series Mac, and Take Control of Securing Your Mac. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.