What does “awaiting reviewer selection” really mean under the “minor revision” scenario in the ScholarOne Manuscript ?

I just submitted a revised paper to ScholarOne (major revision). After one day of submission, status was awaiting decision but now after 10 days status change into Awaiting Reviewer Selection. I suppose that in most cases of minor, the revised manuscript will only be reviewed by the ADM or associate editor. However, I just noticed that the status of my revised manuscript is now "awaiting reviewer selection". Does this entail that the revised manuscript has to go back to the original reviewer for (final) re-review? Or, could it be that it is an automatic status message showing that the editor i