Deep down, you probably already know this is a shady practice.
Firstly, you can't have something just put to the vote without a discussion / debate (there is 1 exception but this is not it.) So whether committee minutes are approved at the next same committee (logic dictates even if a specific reg cannot be identified) or the next PC meeting - there cannot be an endorsement without even the opportunity fir a discussion.
Second, what if none (of few) of the committee members are present at the PC meeting where the endorsement occurs or if none (or few) of the Cllrs at the PC meeting were present at the committee meeting - this is where logic kicks in. If you weren't present at the actual committee that seeks to endorse its minutes as a true and accurate record you cannot honestly vote to affirm that they are true and accurate.
So the logic test fails...
Apart from that, committee can only make decisions which it has a specific delegation so to do. If the ToRs are "vague" then is there even a delegation?
This practice sounds highly inappropriate.
What sort of decisions are currently being ratified under this existing process?