Urgent. Entering on Study Permit with DLI different than one I applied for??

[Plummit]

Hello

I applied for a study permit for a particular DLI (college) several months ago. It has now been approved but I had to withdraw from the college as the processing of the permit took too long (way beyond listed estimates).

Now I have the approved study permit that I originally applied for but I am no longer enrolled at that same school.

I have been accepted into another program at another school. It is also an approved DLI (college) and I can start in Nov.

I have not yet entered Canada on my approved study permit yet.

1) Can I enter using my new letter of acceptance from the new DLI even though I applied using a different schools letter of acceptance?

2) will the fact that I changed schools/courses/field of study be an issue?

3) or should I enter on the old schools letter of acceptance (even though I've withdrawn) then switch schools online once im inside canada?

Please let me know what's allowed or what I should do so that I can come and start studying asap.