moving photos within an album
I have 340 photos in one album that I'm attempting to rearrange the order within the same album. (I've checked & I'm not sorting by date, etc.) However, every time I move a photo to a new location within the album the photo returns to its original position. I was able to move a few photos. However, not consistently and at the moment it is not working at all. Have attempted to move the photo to the new location and wait a few seconds but that doesn't seem to help. As one can tell I'm not computer savvy at all so assistance with this would be really helpful. Any suggestions would be most appreciated.
iMac Pro