Adding product features - content disappears

I’ve run into a problem when adding new product features/filters.

If there are products in the shop with content in the features fields, and I then add a new feature, all of the previous content completely disappears, apart from those features in drop-down boxes. So, any features that were in text boxes are GONE.

I am still at the development stage so it hasn’t made a huge impact at the moment, but I can’t imagine what will happen when my 300+ products are in, I add a new feature and all of the content disappears. Has anyone else had this problem? Anything I should be doing that I’m not?

Any help/advice would be much appreciated, thanks!

Turns out this was a bug that the Help Desk sorted for me - something to do with the database not saving changes.