The Gemini integration incorrectly uses LUNA instead of WLUNA.
When depositing or withdrawing WLUNA from other exchanges into Gemini Cointracker does not properly track the transaction as it ends up with a LUNA transaction on Gemini and a WLUNA on the other side making the transactions look unrelated. You end up with LUNA asset in Gemini and WLUNA on the other side where everything should be in WLUNA.
Gemini states that it uses WLUNA in their docs: https://www.gemini.com/prices/terra-ethereum
As you can see in the screenshots the transactions are interpreted as a distinct send and receive. They should be a transfer and I believe they would be if the Gemini LUNA Wallet were listed correct as WLUNA instead LUNA.