thanks Steve
I had held a forlorn hope that that might be the case – but the actual footage itself – not just the previews -was from earlier in the day – tho the clip duration, names etc didnt match – its almost as if the data was simply renamed in different segments, but no new tracks were written…
no quite sure what the lesson is here :s tho’ new a 5d iii with 2 card slots might be handy 🙂
thanks again for your help & advice