# Step 4 - Manually Recreate Customizations

Configuration Manager copies all configuration files to the target system, however, it does not install all configuration files on the new target system because:

1. The ION Enterprise 6.0.1PME 7.2.2 source system contains customizations that cannot be automatically transferred by Configuration Manager.
2. The PME 8.2 target system contains new default values and changes that should not be overwritten.

Configuration Manager copies all customized configuration files that are not automatically installed in the system to `...\Power Monitoring Expert\CM Migration Files`. For example:

Review this folder and decide which customizations you want to recreate on the new system.

The topics that comprise this section consist of all possible configuration customizations. However, most systems in the field will use a small subset of these.