Tvheadend

Recently I switched to xmltv data for epg information and it's much better than epg send by provider, so much better that it also tracks air time during the week.

So I was wondering if tvheadend could make use of this and update it's start/end time for scheduled recordings if any thing changes for this? (i'm under the impression it doesn't at the moment)

Now I set a fixed start/end time with a few minutes extra before and after but if tvheadend would update it on epg changes it would be more efficient and accurate.
This could be a scheduled action, once a day for example or few hours before recording starts.

Not sure if such is requested before, I couldn't find any.