Making duplicates of photos for different presets in Lightroom mobile

I chatted with an adobe CC Subject Matter Expert earlier today.   The duplicate feature is only availbe in the desktop/laptop version of Lr CC (I assume it is Classic).   

But one thing I did notice.... a duplicate in Lr CC is not really a duplicate.... if you look at the file name of th photo... it is the same.   I guess what lightroom does to better manage file sizes is creates indexes or something on the back end (that we don't see).    When the file is exported it added a copy number to the file name, I did the exporting a number of different ways, I could not easily tell the algorithm for determining the how the copy number is calculated.  I then tried to export a new copy of the original version, as well as one that was viewed as 'original version'...  into the folder with existing files... it added new copy numbers to each one. 

So, what I think I understand from this is that the duplicates and originals (editied versions or not) will export with a copy number ... but the copy number creation is a mystery.... it may even be the operating system (Windows 10) and not Lightroom that does it.

You can create a feature request at this forum which is monitored by the engineering team: 

https://feedback.photoshop.com/photoshop_family/categories/photoshop_family_lightroom_mobile or add your vote to an existing idea.

I also want this feature added. I see myself using another editor as well like Snapseed, if it is not added in the future, just so I can do different versions. 

I've not found a solution to this either for the mobile app, but I would love it.