We have two versions of the mhr FST, one normal and one enriched with a script changing it into the orthography of the 1930-ies:
(and correspondingly for the other FSTs).
For corpus compilation, we need the *-thirties variant in as *.pmhfst as well.
Marked as blocker, as it blocks corpus analysis, and P4, as we plan updating the corpus in August.
This has been fixed ages ago. Closing as fixed.