This is a frequent bug report. When deleting visits via the GDPR Tools then the deleted visits still show up in the reports.

The goal of this issue is that, whenever some visits are deleted then we also should call the Invalidate Reports code. As a result, next time core:archive will run all of the reports for the invalidated days (and the week, month, year) will be reprocessed, and the deleted data will be reflected in the reports (ie. not visible anymore).

(this will also benefit Cloud customers since invalidating old reports is disabled on Cloud yet sometimes we really need some data to be deleted)

Also in the UI we can remove the text In this case you may want to consider to invalidate reports after deleting these visits. since it will now be done automatically.