drush fu VS features/recreate

there is "Data" array which doesn't get exported (and always the feature says it's overridden) if i used the using drush fu feature-name as you would see here: http://screencast.com/t/scTGQJqDvTN

however if used the features recreate interface.. it works as expected and does export the field-groups with the "Data" array.

i'm using fieldgroup 7.x-1.x-dev

Any advice how to fix that? it's time consuming every-time we have to go through the interface to rebuild the feature.