Pre-filter vs. no pre-filter when data used in estimation is already HP filtered

[jpfeifer]

1. See

Dynare Estimation: help

For seasonal adjustment use either X11 or Tramo/Seats. Also, do not use the HP filter. See Pfeifer(2013): “A Guide to Specifying Observation Equations for the Estimation of DSGE Models”

2. I would need to see the files.