I’ve also been wondering about this and from what I understand you can have both an OWP and a valid study permit at the same time. As long as you comply with the conditions of both permits there should not be a problem.
If your permit says “unless authorized” then the respective other permit (work or study) are proof of your compliance (“authorization”) with R183(1) which are the conditions imposed on all temporary residents.
For example even CIC on their website for “working off campus” (which is often a condition on study permits) says: “you can’t work off campus if ... (list of situations) ... if any of these situations apply to you, AND YOU WANT TO WORK WHILE STUDYING IN CANADA you need to APPLY FOR A WORK PERMIT”
So why would they tell you you need a work permit if somehow you would stop being a student? The text is pretty clear that it is possible to be both at once: https://www.canada.ca/en/immigratio...rvices/study-canada/work/work-off-campus.html
That's exactly what my consultant told me.
This is not a normal application to change status.
Thank you!