Keeping them FULL and not emptying them are different. I have to empty mine, or I could just start leaving them in the secondaries longer...
Primary: Old Man Pub Ale
Secondary #2: Empty
Carbing: Oatmeal Stout #3
On Tap: Carbing
Emptied Kegs: Oatmeal Stout #1, B-Day Oatmeal Stout #2