Sebastian - Well spotted - that was the problem all along, not having a space after the '<!--' seems to cause problems with the HTML export. I put spaces in and all works 100% now!
Sledger - I hope I'm not going to come across as a dog that just can't let go of a bone but Xara does not need to have a text object grouped for it to work as a placeholder. Please see the attached file - these are all ungroup text objects that work fine as placeholders.
Anyway I'm really looking to the forthcoming tweaks set!
All the best
Grant
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