Creating multiple versions of a XML conversion program

When running the Canadian Payroll Year-End, could you explain the reason we cannot create more versions than the XJDE0001 version for the XML conversion program R89772001X?

SInce we produce more than one run of T4s (two groups of employees), we would love to be able to attach to each Year-end ID, in the program R77501 Processing Option 1, a different version of the R89772001X, which we currently cannot do because the Batch Version program prevents us from copying the version XJDE0001 of R89772001 to create another version of that program, in which processing option we would give a different T4.XML file name.