How to create .env texture file?

Sorry for the up, but I’m not sure why there isn’t anymore the Generate .env texture button when we’re drag&drop an .hdr environment in the sandbox?

I followed the process written in the doc, the env is modified, but the button does not appear

[edit] mmmh, with a dds from IBLBaker, the button shows up, but I was remembering that this worked also with .hdr, right? if no, doc linked above has to be tweaked