Migrate the "patch" directory

If customer-specific calculation classes or other Java classes were used in the client to be migrated, these may need to be transferred to the new client, as well.

To check if customer-specific calculation classes were used in the client to be migrated, check whether the patch directory exists in the <PPM9X_DATA>/custom/<client>/ directory and if it contains files of the jar type. If this is the case, please contact Software AG Customer Support to obtain suitable versions of the customer-specific calculation classes for your current PPM 9.9 version.