When writing functional data to MNI space, if a linear anat-MNI transform was calculated, it performs two transform+interpolation procedures, func-anat then func_in_anat-mni. These two transforms should be combined and written once, so that interpolation only occurs once.
https://github.com/FCP-INDI/C-PAC/blob/63c66c3b1d5e3f662ce2ffb521598364805156e4/CPAC/pipeline/cpac_pipeline.py#L2434
When writing functional data to MNI space, if a linear anat-MNI transform was calculated, it performs two transform+interpolation procedures, func-anat then func_in_anat-mni. These two transforms should be combined and written once, so that interpolation only occurs once.