For clarity these locations will be as follows:
Files in the workspace located outside the dataset(s) will need to be reviewed for changes since this aspect is not covered by this document. Any workspace files that have been customised to your company standards should be included.
The migration from SS4 to SS5 is simpler, the changes are primarily to support new mechanical features.
Summary of steps:
Upgrade existing elements to current DataGroup System properties
Updating/Migrating and SS3 Datasets to SS4