It's not the first time I have transferred blogs from Blogger to Wordpress and vice versa. I haven't transferred lately but I forgot that I did back in 2017, where I ended up doing the same thing I have been doing the past two days. When transferring back to Blogger sometime in 2019, all of the photo files were on WordPress. When that blog was deleted, so were the image files that went with the posts that were transferred. When I deleted my blog a few weeks ago I forgot all about the work I did to reload the photos to each post that had come from Wordpress a year or so ago.