"iPhotos" to "Photos" transfer after upgrading to Catalina

Photos can transfer your iPhoto Library. Launch Photos with the option key held down. From the resulting dialog, choose your iPhoto Library. Photos will create a new library with your iPhoto Media. Your iPhoto Library will not be changed.

gaucho10 wrote:

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I checked in "Time Machine" but the "iPhotos" icon is not highlighted.

Did you already restore your iPhoto Library from Time Machine? You cannot use migrate the iPhoto library directly from the Time Machine backup. You have first to restore the iPhoto Library to a volume, that is not used by Time Machine.

I'm glad you got your photos back 😊

You are welcome. I have typed almost that exact same thing a few hundred times now and you have been the most appreciative. 8^) I am reminded of the bible story of the 10 lepers.