That is one "oddity" about Everything's property system. If you explicitly add a property to Indexes -> Properties setting, for mandatory indexing, then those setting's inclusions/exclusions will prevent all other automatic (on demand) property requests from going through. Everything will prohibit un-included files from ever having that property read, even if your intent was to make sure certain files are always indexed at a minimum. It's really at a maximum.
Example: You want to make sure that all your *.mp3 music have their Length (runtime) indexed at all times. If you don't also set it up for *.wav and *.flac audio, and also *.mp4 and *.avi and *.mkv video files, then those files will NEVER EVER have their Length metadata read, ever again, never ever not no how. There's no way to specify intent of exclusivity.
Hmm, there's more. I'm still trying ADS and find it confusing. E.g.: The filter "!adsnames:' will show all files w/o ADS. After adding ADS to all found files most of them will immediately vanish from the list in Everything but a few remain, though "Alternate Data Stream Names" is one of the indexed properties for all found files.
Is there a rule when and why Everything will recognize changes to the ADS and update it's DB?
All files are stored on a network share and accessed via UNC. The server is running an Everything Server, the host showing the faulty list is using a "Network index". (I've tried "Network Drives" and "Folders" too with similar results.)
Thanks for Reading, flubber
[EDIT]
Got it! Because of restrictions in my digital asset management program I'm forced to leave the files "data time modified" untouched. But updating the ADS and immediately restoring the original dates in a loop was much to fast for Everything to catch all changes.
I've changed my routine to run two loops for updating the ADS and restoring the dates. While the overall performance is pretty much the same, the times between changing the ADS and restoring the dates for a single file is now long enough for Everything to notice the changes.