Customize Migration Report
The ability to customize what is contained in the migration report such as columns and items included in the item count, and being able to keep those settings saved during export.
For large volume migrations, the generated migration report is VERY large. For a recent migration of 418,000 items, the report was 88MB and, of course, could not be opened in Excel.
You need to implement an option to have the migration report split into several reports. Would also be useful to have an option that to specify that a new folder be created for each report and the set of split-up migration reports (for a single run) can be placed in that folder.
The naming of the split migration report files can simply be prefixed with a number.