[Freesurfer] aseg2feat for PPI seeds for FSL

Hi Freesurfers, I want to do a PPI in FSL FEAT using the V1 left and righ found generated in recon-all as seeds using:

I know for each subject I have to get a timecourse for my seeds fslmeants -i filtered_func.nii.gz -o my_timecourse.txt -m V1_mask.nii.gz

For each subject, I've run reg-feat2anat on my FEAT data from each of 4 runs.

I have 2 questions: 1) Does it matter which run's FEAT I use for aseg2feat --feat featdir --aseg aparc+aseg to generate the binary masks for my seeds?

2) Does fslmeants need a special registered filtered_func.nii.gz from a cross-run GFEAT? If so, how do you specify it for this and then for actual PPI analysis in fsl?

Thanks. Michelle