I start by exporting 3 exposure bracketed photos to Nik HDR. They get turned into TIF files. Nik HDR then merges into a single HDR TIF file. Yes, I have checked “save and edit later”.
Let’s say I’m limited on time. I do 1/2 of my alterations to the HDR photo. I want to save, and return later to finish the edit. However when I reopen the file in NIK HDR it looks nothing like it did before saving. It will look flat, underexposed, histogram shifted left.
I have tried saving a HDR file, and reopen it 5 seconds later, and it looks nothing like the editing I just finished. This means I have to finish an entire edit 100%, otherwise there is no reason to even begin.
Final note, if I view the saved HDR in photolab, it does display correctly.