Unless someone with Fortran skills patches up a new LCModel executable that supports reading in the slightly changed header field names in the XA30 RDAs, these are your best bets:
- Write a script that just changes the header field names back to the pre-XA30 variants (hoping @stevehui shares his code in the other thread Does LCModel support Siemens data from the XA series? - MRS Software / LCModel - MRSHub Forum)
- Stitch together a pipeline that supports XA30 RDA and then writes to RAW (something with spec2nii /Osprey/FID-A)