Sorry one more question and then I’ll leave you in peace.
I tried the Child Theme (only in live preview I didn’t get as far as using it for real). It reset all my theme options, everything from the images in the slider to the size of the thumbnails on the category pages, and the number of columns etc. It also (very strangely) messed up my widgets / sidebar throwing up some content in them from a previous theme!
Is this “normal” (I disabled caching in case that was the issue).