This is related to the Advanced Trade API.
At present, it is impossible to accurately correlate results from the v2 Transactions resource that represent advanced trade fills due to the omission of the trade ID in the “advanced_trade_fill” object. (The field requested is the “trade_id” field found in the Advanced Trade API’s orders/historical/fills resource.)
In addition, the liquidity of the fill is missing from the v2 Transactions resource.
Please add these fields.