Restoring worn engineered flooring

My house has Bruce engineered hardwood floor (Oak - Gunstock | ABC3201 | Hardwood) that was installed roughly 10 years ago by the previous owner. The floor near the door and in the foyer shows obvious sign of wear. There are many spots that are worn down to where the grain is showing.

I called Bruce and they said nothing could be done about this. They did not recommend sanding any of their engineered products.

I had one installer come out and tell me that sanding was possible, but he was leery of doing so because he had issues where the vibrations of the machine cause the old glue to come loose.

He did, however, recommend I use some gunstock minwax stain and then some minwax paste finishing wax to seal it in. We tried a small area but I was not impressed...

Has anyone successfully restored their flooring? Any recommendations?

Slightly off topic, but I was not impressed with Bruce's response, especially considering I had just installed the same flooring in an adjacent room. The newer version of the flooring is supposed to have a more durable aluminum oxide coating, but only time will tell. The newer flooring also had a totally different finish!

What are some better quality engineered woods out there that people recommend?

Thanks!


Some photos:

 

Looks like it needed more or a different color stain .... the wax must be removed before you can restain.

 

Have you tried the line of Bona floor care products? They won't do much for the discoloration, but will definitely have the floor shining like new.

 

I'm curious why only the grain is wearing off. Could it be a moisture related problem that raised the grain and made it more susceptible to wear?

I have in the past gone directly to the manufacturer for a small quart of the ACTUAL stain used in the process. It will cost a fortune, but you would be more likely to get a match than going off the shelf with mainstream stains. We were doing a high end remodel and wanted other hand milled elements used in the bathroom to have the same finish as the vanity, which was an interesting onyx black transparent stain that could not be matched locally.