Exporting animations with negative keyframe values

Is there any chance of support for exporting animations with keyframes on the negative side of the timeline.

Currently an artist using the Ofusion exporter, adds new animation with a start frame of -400 and an end frame of -300 and clicks Ok, the dialog resets the start frame to zero.

Thanks

We will add this to the list, even when it seems its not a common case, if you need this asap, just open a support ticket