I edited the metadata of TIF files which were created in Adobe Photoshop and contained many layers. I edited their metadata via the Metadata Pane and I noticed too late that now all these TIF files are reduced to one layer (all layers merged to one). This means I have to use an older backup and redo hours of work.
I tested with PSD files (native to Photoshop) and this doesn't happen there.
We may be able to make Opus preserve the data, depending on if it's happening in a component that we can control. I'll need to look at the source.
Is there an example image you can give us to test with?
(As an aside, this will probably happen with a lot of software. Photoshop abuses the TIFF metadata by sometimes storing enormous amounts of private data in there (much larger than the image itself), to the point that it makes TIFFs (or their metadata) either fail completely or take several seconds (and a lot of memory) to load. Software that has run into this will often filter out the Photoshop metadata entirely when loading TIFF images as a result.)
I've attached two TIF files, one with layers (larger filesize) and one without. Change the file extension back to .tif to make them work.TIF-without-layers.c (434.8 KB)
TIF-with-layers.c (1.3 MB)
edit: apparently my described problem doesn't occur with these example files. I've tried adding more complexity in Photoshop, but it didn't change. I need some time to access the original files which showed the issue and build example files from them.