Painter not baking any updated details

Hi there...

I have been working on my model all morning.
I have been adding high poly meshes and exporting as normal, baking has gone well. I am using obj.
So, I modelled a few extra bits, and the dont show up at all despite being visible in the Bake room.

You can see from the screenshot which ones are missing.
I tried a load of things, combining the HP meshes together, triangulated, exporting out as one file type then bring it back in as another. Applying scale, rotation and all transforms.

Heres the high poly in bake room showing all details...

Heres in texture window showing nothing?

any help would be great..