If you use pseudonymization, the custom directory contains a keyfiles directory. Ensure that the contents of this directory is copied unchanged to the custom directory of the new PPM version.
Pseudonymization is supported in PPM version 10.5 and higher.
You can use CTK to check whether pseudonymization is enabled.
Procedure
to activate the edit mode.
Warning
If you select this option before you enable pseudonymization and migrate the keyfiles directory, CTK creates a new pseudonymization.key file. The existing data is lost because new data is pseudonymized with a different key.
Your changes are applied.
Tip
If the pseudonymization.key file is overwritten, you can copy and recover the pseudonymization.key file from the old PPM version.