Cleaning a raise relief Vintage Vase before selling. This is what happened?

Описание: ***Correction: Not Chalkware-It's made of Plaster.
Hi Everyone, my name is Betty. I am a seller on two online platforms, and on one of those sites, I am limited to listing only vintage items.
Featured here is a cream-colored vase with a raised relief depicting an Asian village scenic design. Between the raised details, there is a Light brown color applied in a wash or distressed style look.
Before selling any vintage item, I always take the time to dust it off and clean it gently. I believe this should not be the responsibility of the buyer. As you can see from the photos, especially at the front and top of the vase, I began removing dust using a cotton round and a Qtip with water to reach all the small crevices. I did not scrub the surface.
During this process, I immediately noticed that the brown paint came off easily along with the dust. This raised concerns about what might happen, had I not cleaned it, and the buyer received the vase and then dusted or cleaned it themselves resulting in a completely cream-colored vase, which was not what the listing and photos showed for sale. Such a situation could warrant a return.
After seeing several other listings for this exact vase with the same brown paint between the raised relief, I reached out to those sellers to ask if the brown paint came off easily when they cleaned or dusted off their Vases. Only two responded, saying they did not want to chance it for the risk of ruining the finish?

Conclusion: I then made the decision to fully clean the vase to ensure its condition and finish are accurately represented to a potential buyer. This approach prioritizes transparency and honesty over the common practice of leaving vintage items altered/untouched. Comments welcome-What would you have done as a Vintage Seller in this situation?