We lived there for 3 years and 2 months.
There is only one offer from a company that considers the complete replacement necessary, because otherwise you would see discolorations etc. between new and old. But then you would also have to replace everything in the hallway, utility room, bedroom, and children's room, because it is all one flooring. This is divided roughly every 2 meters, so I only assumed the replacement of this strip in extreme cases... that would then be about 10 sqm...1,200€ :30 * 10 = 400 euros..
Moreover, in my opinion, the complete replacement of the floor due to color differences etc. is anyway "nonsense," since this replacement never actually took place. So it was only necessary on paper.... the stain is still there.