Changing Vendor Removes Product Description, Photos Etc

Good day,

When one of my vendors add a product to the product admin and I change the vendor to a different one, the following aspects of the product page (live website) disappear:

1) Product images

2) Product description

3) short description

4) promo text

5) vendor name on the product page


Tags, however, seem to work and Related products still appear correctly at the bottom of the page.

Has anyone else faced the same problem?

Did anyone find a solution to this?


ideas are welcome