Updated Woodmart theme and reverted alot of the default template items

Hi,

I have both Woodmart parent and child theme installed (child theme is activated).

There was an update required on the parent theme, which i had completed. After this was done it had changed alot of elements on my website back to the default when I first imported the demo.

Eg. original woodmart favicon, footer text, html block prefooter!

How come this happened?
Will this always occur when I complete an update?

This is not good!