group editing should group video and sound

Hi,

i have multiple videos on one video track.
ihave extrated the audio from those videos on an audio track. i’ d like to move the videos around to work on them but the sound on the track below is not following like it is on editing software (link premier / davinci etc) so i use a folder to put both video and audio track.
size / positions of regions are the same. but still when moving video (or audio, the region inthe “grouped edit” folder does not follow my edit.

i understand there’s no fade / gain etc on video but at least position and left-right margin should follow sound no ?

thx


EDIT -
found that some regions are linked… some are not. and it’s not because of name or size … dunno what’s going on.