This tip is really a special case of the Merge workflow that @MortenCopenhagen has posted as part of this #LGCTM series. It applies in the specific case where you find a duplicate listing with one of the listings using the “correct” (in the Google Maps sense: the name as it is used on the storefront) and another listing using the “legal” name (the one used to register it with the local authorities such as the Chamber of Commerce).
A specific example can be seen in the screenshot, which nicely ilustrates that it is not really easy to get a merge edit approved (as you can also read in this Case Study). What I came across was a POI literally in the middle of a crossroads that had the category Restaurant by the name of “Fong Fook”. About 100 meters away from the crossroads was a Chinese restaurant called “Shang Hai”, and the fact that Fong Fook definitely also sounds oriental made me decide to check this out more thoroughly.
And sure enough, a little bit of Googling (in most countries there are both official and commercial websites that offer lists of businesses and their addresses) revealed that there was indeed a business in the restaurant sector with the official name Fong Fook at address where Shang Hai is situated. Another duplicate spotted, so I went into full LGCTM mode 
!
Simply reporting it as duplicate would most certainly have resulted in a Not Applied, so I started making the changes needed - you should read the screenshot from the bottom to the top:
- move the map marker for the Fong Fook listing from the middle of the crossroads to the actual location
- change the name to Shang Hai (as that name edit was successful, the overview of my edits in the screenshot no longer has Fong Fook in them , of course)
- change the category to Chinese Restaurant to match the category of Shang Hai
- suggest the merge
The result, after the first 3 had been approved: the merge was approved by the algorithm within seconds, as you can see from the fact that all edits have the same edit date (if manual checks are needed, the delay between submitting and approval is typically a couple of weeks).
There are a lot more post about the #LGCTM (Local Guides Clean the Map) project - you can find the main post with all the links here.