Do I need to leave the black tankconnect available when connected to a full hookup

Do I need to leave the black tankconnect available when connected to a full hookup Cue the music. It’s energy for a parade. The bluish RV handbag tank parade. Let’s drained our grey liquid container and visit the dump facility. Yay! The Reason Why You Want An RV Tote Tank An RV mobile waste container, …