If a Council delegates a function to a committee, the Council should not consider any matters that it has delegated. You can't have two distinct bodies considering the same issues. It's a recipe for chaos, especially if the committee has a delegated budget. Delegation must be formally documented, so that the boundaries are clear to all.
At your Annual Meeting in May, the whole committee structure and membership will be up for review, so new members will have the opportunity to put themselves forward for committee membership. I believe it is right and proper to limit the number of members on committees, as smaller groups make quicker decisions and, if you have the right people on the committee with the most appropriate skills, qualifications and life experience, they'll make the best decisions too. I'm aware of smaller Councils that have a committee structure, but membership is not defined, so every member of the Council seems to be on every committee. That's a Council meeting, not a committee meeting.
The standing order requires rejected motions to be recorded with an explanation, so this implies a written record. If your Clerk is not keeping such a record, you should put a motion forward asking the Clerk to do so, in line with the standing order.