ok, clarifying this again, the March 18th date for COPR was for Permanent residents outside of travel exemptions (Federal skilled, PNP, skilled trade etc). Does not, I repeat does not apply to those who have immediate family in Canada (PR or Citizen). yes, there was confusion before June 8th as to who qualifies under the exemption, but after the Canadian government made an announcement on June 8th stating that any foreign national who has immediate family in Canada is exempt from travelling to Canada, as long as they are planning on staying here for at least 15 days (Quarantine period for COVID-19). This falls under family reunification.
I would make my case, that i'm going to stay permanently as my spouse is here and my visa allows me since I have COPR (IM-1). This makes it easier for a CBSA officer to let you enter the country.
My COPR was issued March 20. I have booked a flight for June 14 on the VBM. I don't think there will be any issues. As long as you can prove you are travelling for essential reasons (your family here is here, and you plan to stay here permanently). i made this decision because my counterfoil was going to expire on July 29, 2020 and I don't know what will be procedure after. I've waited over a year an half to see my husband.
Good luck everyone!