samba - Mar 2023 - Finder results - modified date in the future

Hello samba-people,

we're having some weirdness with spotlight results in the finder search. 
Some (!) files show a modified date well into the future (2027+). 
Navigating to the file in the finder correctly shows the modified date 
(july 2022) - this matches the mtime on the filesystem. This happens 
with mac os 13.2.1 and earlier versions. We're using Debian 11 with 
4.16.9 from mjt's Repo.

For spotlight we're using the elasticsearch backend with our own indexer 
(found here https://github.com/Ellerhold/fs2es-indexer).

I can remember that Ralph Boeme said something that not all fields are 
getting correctly mapped back to the spotlight result. I have a hard 
time remembering which fields though. I tried to add 
"file.last_modified" to my indexer - without any success! Is the
mapping
https://gitlab.com/samba-team/samba/-/blob/master/source3/rpc_server/mdssvc/elasticsearch_mappings.json
current, so every field in there is mapped and returned to the mac os 
finder or is this "future-proofing" and only a subset of these fields 
are actually mapped?

Thanks in advance,
Matthias.

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