Sustain from Midi not rendering

[JayWalker72]

Hi

I've looked through the manual and done a fair bit of google searching but I wonder if someone here can help me.

I'm using T7 and using Spitfire Audio .vst instruments. All sounds great when I record and play back but when I render out to either mp3 or .wav I find that the notes that are supposed to sustain get cut off abruptly.

Any advice will be greatly appreciated!

Many thanks

Jay