LC HTML module getting wrong code

Hello, about a week I have and issue with Live Composer on on of my websites where I need to upgrade content periodicaly.

I have code in HTML module which is actually working on front end. However when I enter it in LC, it puts there code from one of following modules (TEXT) and I lose the original code. Tryed to export whole page to new clean page and it does the same think (pastes wrong code into the HTML).

What should I do? I need to change data and due to this issue I lost the original code which I haven!t expected to lose, so it’s not available for me now…

Thanks for your help.