Could you please see if all the images that you export from Lightroom are not showing the Keywords when exporting, or is it few of them.
Also please try and create a new catalog, and then import some images in it , apply the keywords and then export the image.
Hi, it's only certain 'mid level' keywords I am losing. For example a hierarchy of Date then within date each year as a separate keyword Date > then a year ie 2014, 2015. When I export the new file has the year but not the date keyword and creates it outside of the date keyword. It retains other mid level keywords though. And yes it seems to be on every file I export.
Did you try it with a new catalog as well.
It fails on the new catalog as well
I'm having problems following the details. The most efficient way to troubleshoot this is to upload a sample exported pic to Dropbox or similar and post the link here.