I believe you should be able to import an MFDS repository from 6.0 into 2.2 without problems. After importing it you may want to edit each of your servers in Enterprise Server Administration and click the Validate button to make sure.

You should be able to export your 6.0 CICS resource definitions (the dfhdrdat file), if any, using the casrdtex utility, then import them into 2.2 using the casrdtup utility. After doing that, you should run the caspcupg utility, which upgrades resource definitions to the latest version.

You might be able to simply rename the dfhdrdat file in your 2.2 installation and copy over the one from your 6.0 installation, and then run caspcupg. You might try that first to see if it works.

Thanks Michael for your response. Current setup is used only for JCL execution and no CICS is involved.  

I will let you know if this solution works.