I have record of a successful payment with transaction ID, however when attempting to look up the payment by ID or find it by filtering by amount or createdTime it does not appear. All other attributes on the payment are valid such as employee ID and tender ID
It sounds like the payment auth was successful, but the payment may have been voided and thus is hidden from the defaul API results.
Try using this additional filter to search voided payments: GET /v3/merchants/{mID}/payments?filter=voided%3Dtrue
Clover also never deletes merchant's transactional data.
