taking out the beam on phase shifted data

Created by: rvweeren

I phase shifted my data almost to the FWHM of the station beam. Then I want to take out the beam (array_factor since the original data was already corrected in the phase center with the element beam) like this:

NDPPP msin=phaseshifted.ms msout=out.ms steps=[ab] ab.type=applybeam ab.usechannelfreq=true ab.beammode=array_factor ab.updateweights=true

As I understand things, NDPPP now should take out the beam (array factor part) in the -current- phase center of the ms. However, almost nothing changes when I make an image. While I should see the my fluxes go up by a factor > 2. Seems like this step is broken and it does not correctly pick up the phase center??