Yes, they can, but if you don't have a choice, just go ahead, try to enhance it, add a letter of explanation, stating that you have requested a new PCC.
It's not that straightforward as it seems Work permit is temporary anyway, so yep, they need proof and guarantees of the return.
And looking at the list, you definitely need to rework your application. There are many more issues than just ties.
Yes. You can apply for an additional permit. However, you must
be eligible for both permits
show the officer that you can study and work at the same time
When you apply, include a letter to explain how you’ll do this. Give details about how you’ll balance your work schedule with your studies...
You can, if you meet the residency requirements.
Residency requirements
The Immigration and Refugee Protection Act (IRPA) establishes residency requirements and obligations with respect to each 5-year period after an individual obtains permanent resident status.
Pursuant to subsection A28(2)...