in looking at the various ways to trim the in point on a clip, just need to backup the in point 2seconds (yes... to cover the transition for cued playback) i have noticed mixed results when applying the macro
for example

local-jog -50
mark-in-update

seems to work on some clips but mixed results on others

i did try a

set_item_prop

macro, but that ended up applying the same timecode to all other clips

i am curious what is the best command for an "any clip" situation
many thanks in advance!
-r