Layers not importing with masking

Building an onboarding flow, and Principle is not importing/showing the layers on an imported artboard.

Have isolated the issue to mask on a layer not working. Even flattening the layer doesn’t have an effect.

Principle flattens any layers that contain a mask on Sketch, this is tricky at times.

The solution for me is to remove any mask on Sketch if I can, or flatten it in Sketch before importing to Principle, that way I can control what is being flattened, as sometimes Principle flattens bits that I need to have separate when importing them.

@OliverBannatyne Could you post a sketch file with this behavior so I can see what is going on? Oh and please include the versions of Principle and sketch that you are using