Didn't notice both the TRA93U flights, but according the airport system it was indeed a round trip (TRA693/93U EHAM-LGKR-LGKF-EHAM). Strange, because normally TRA changes the flightid after the first stop on the outbound leg. In this case it should've been TRA693/93U EHAM-LGKR, and TRA694 LGKR-LGKF-EHAM, but for some reason they didn't.