I figured out with the scripts mentioned in the 2025 OpenVSP Workshop: Structures Demo
https://www.youtube.com/watch?v=AUT21r9N9MMThey transfer loads from the Calculix file to myNastran file.
Please see the attachments for 2 scripts and text below of the Transfer.bat file (copy it, change names, and save with "Transfer.bat" name)
python Aero2Nastran.py --set_id 1 --calc_file FEM_Test_2_WA_calculix.static.inp --input_file FEM_Test_2_WA_NASTRAN.bdf --output_file FEM_Test_2_WA_NASTRAN_static.bdf
python Fixes.py --input_file FEM_Test_2_WA_NASTRAN_static.bdf --output_file FEM_Test_2_WA_NASTRAN_static-fix.bdf