For example:

If (Model.nCategoryUID == 1)

Changes to:

If (Model.nCategoryUID == '03D30256-B643-4735-A42A-E65601DCF9CF')

The mappings between the former decimal to new GUID values can be gleaned from the log files generated by the Database Update Tool used to convert a MET/TEAM database from 2.1.2 to 2.2.0.