While I was able to load it into my app using ImageEn 8.7.5, any changes I made did not get saved. I tried the same thing with Microsoft Paint, and it could save the changes. I did not download any drivers as mentioned in other HEIC posts on the forum on my Windows 10 Home version 1903.
I try to save changes using this line of code: ImageEnView1.LayersSaveMergedTo(fImageFilename); where fImageFilename is the HEIC filename.
No errors occur, but the file's timestamp is not updated and reloading it shows none of the layers merged in.