Maybe you are right if it was In-Canada spousal sponsorship application (the basic application should be under IRPR 124).
But here it is PGP appplication under family re-unification prorgram.
If it is Family class/PGP sponsorship (IRPR 117), with PR applicant outside Canada, after CPC-M part, I understand they send it to VO.
https://www.canada.ca/en/immigration-refugees-citizenship/corporate/publications-manuals/operational-bulletins-manuals/permanent-residence/non-economic-classes/family-class-final-decisions.html
https://www.canada.ca/en/immigration-refugees-citizenship/corporate/reports-statistics/evaluations/family-reunification-program.html
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The Centralized Processing Region (CPR) at NHQ is responsible for inland program coordination and liaising with other branches regarding policy and operational design of the FRP. Outside of NHQ:
- Case Processing Centre - Mississauga (CPC-M) is responsible for receiving sponsorship applications and assessing sponsors’ eligibility prior to forwarding applications for permanent residence to the appropriate visa office.
- CPC Vegreville (CPC-V) processes spousal or common-law partner in-Canada applications. Unlike CPC-M, CPC-V assesses both the sponsor and principal applicant on these applications.
- Case Processing Pilot Ottawa (CPPO) assesses low-risk PGP files which have been streamed through CPC-M.
- The CIC Call Centre provides basic information in response to telephone inquiries.
"
*The document is little old...so we may have to read CPC-V as CPC-E
