Cannot use Compound CRSs

[JohannaOtt]

when importing the attached data with the Compound CRS 5555 (almost the right one, except from the date of the height reference system, that cannot be found in EPSG registry) and trying to export it to EPSG:7409 (CompoundCRS allowed in INSPIRE), hs produces an error message:

[JohannaOtt]

Also, when creating a CompoundCRS as user defined CRS in the hale studio settings with a WKT (in this case, I used EPSG:5832) and trying to export data chosing that CRS, it fails with the following message indicating that no CompoundCRSs are supported:

As the Building 3D data in the AdV project uses Compound CRSs (at least every dataset I saw so far), it would be very helpful to be able to handle those in hale studio.
Right now, users always get validation warnings for the source and target data when uploading data with a CompoundCRS to haleconnect and transforming it there.