System auto changing my listing templates

For some days now I have been having persistent problems with the system changing my listing templates. It removes some of the preset information, inserts a message about the use of AI into the 'item description' section and deletes the preset postage settings. I have tried re-saving the template any number of times but the problem persists and it's wasting a lot of my time having to reinsert the relevant information for every listing. Is anyone else experiencing this problem?