The yeast will fall out whether the beer is still in the primary or racked over to secondary, it's not like they know their in a secondary so it's time to settle out. I rarely secondary because it's generally not needed, but when I do it is a little easier to rack off of 1/4" of trub than a 1/2" or more.
Growing Hops in Key West, FL....
Primary : Smoked Rye Saison
Primary : Atocha Amber
Primary : Soon To Be Filled
On Tap : Edicion Regionales Inglaterra, Apple Pie Cider, Queen Ann's Revenge IPA, Muddy Waters Bourbon Chocolate Stout
Bottled : Bourbon Chocolate Breakfast Stout
On Deck : Red Wheat and Blue, FBS Clone, Slob On My Rogg-enbier
*Member: The HBT Sweaty Fat Guys Cigar club