The config subdirectory in the custom\<client> directory contains properties files referencing configuration data in the xml subdirectory. The procedure for transferring these configuration files from a previous PPM version client to a PPM 10.5.1 client is as follows.
Procedure
Make sure that you use relative paths and / or \\ as separators between the individual path parts.
If you have been using absolute paths, note that the home directory is now <PPM_CURRENT_CLIENT_RUN>/bin. This means that you need to replace <PPM_PREVIOUS_HOME>/ppmmashzone/server/bin/work/data_ppm/ with ../../../../../work/data_ppm/.