Applying a precondition to an appended anno output

Discussion created by john_1319 on Feb 6, 2012
In the .jpg all of my outputs are preconditions of my input, with the exception of the append annotation feature tool output.
When I set the precondition of this tool to the input, the model will not run.
Basically I want to be able to drag a feature class into the input and run the model, without having to open the append tool and update the output feature class.