I have a new program called “Env2Overlay” that converts the custom obojects in an ENV file to overlay DSFs. This makes it very easy to convert custom airports to version 8.
However one thing I’ve found is that a lot of ENV scenery contains references to missing objects. The ENV loader historically has worked even with objects missing. The DSF loader will refuse to load scenery if objects are missing.
For now I am going to leave the DSF loader in “unforgiving” mode so that missing objects are an error. I think this is more useful to authors: better to clean up the scenery package while converting it rather than convert it to DSF and continue to have missing objects; I think this indicates a packaging problem or other lost content!