Import Multilayer EXRs / Cryptomattes

Hi,

does anyone has a way to import multilayer EXRs into the content folder?
When I try to import a test image (Cryptomatte/sample_images/bunny_CryptoAsset.exr at master · Psyop/Cryptomatte · GitHub) the texture asset is all black.
It also does not have any metadata on the asset, even though the file has a lot.