A user of Photos To Slides
May 6, 2019
There is a simple way to display the album to be imported at the top of the list. It is enough to temporarily add to the selected album a photo of which the date is the date of the day. (Google photo presents the albums according to the date of the most recent photo present in the album). Once the import is finished just remove this useless photo from both the album and the slideshow. It works perfectly for me, moreover it is very simple, and finally does not need to modify any dates useful pictures of the album concerned.