Why can't I select resources such as SPIK and K98 as the "original calculation resource register" when importing a calculation file?

The resource registers SPIK and K98 are owned by Skanska and NCC, respectively, within BM and are not public. Therefore, only users associated with these companies can access their respective resource registers. If you need to work with these registers in BM, you will require an invitation from Skanska or NCC.