If you run a User Activity report for a single folder using the 'Moved' filter and click 'Run,' the in-browser run of the results will show moves both into and out of the folder you selected.

If you build a User Activity report with the same parameters and click 'Export,' the generated spreadsheet of results will only show moves into the folder.

The report would give more thorough information if the exported report showed both moves into and moves out of the folder.