Thanks for the hint! I had forgotten that I can delete some objects
I removed TSA and TRA areas, changed most of D areas to "Not specified"
set some light color for them to be not so visible and red for P and R areas.
My issue is therefore solved. Until the next database update, after which I
have to do the same again, I think...
If I remember right, TRA and TSA areas exist only in controlled air space
so maybe the controlled air space filter would hide also TMA's etc...
I guess you already know this document but here is the list of TEMPORARY
RESERVED AIRSPACE (TRA, LOCAL TRA), TEMPORARY SEGREGATED AREAS
(TSA) AND CROSS BORDER AREAS (CBA) in Finland:
https://ais.fi/ais/eaip/pdf/enr/EF_ENR_5_2_EN.pdf