Router Upgrade-ability - Feature or Future Compatibility

I had to upgrade my TP Link Router provided by the ISP (Cherrinet) for home internet connection.  The router by default that is given to the customer was "TP LINK TL-WR480N 300 MBPS Wifi Router" which works in a frequency 2.4 GHZ.  The Amazon Fire Stick TV service subscription of mine was upgraded and then mandated for a upgrade in the router capabilities to use 5 GHZ frequency router. 

Therefore I decided to buy a new router online from Amazon.in namely, "TP LINK MODEL ARCHER C80 AC1900 MU-MIMO WI FI Router" that is dual mode frequency router that provides or works in 2.4 GHZ and 5 GHZ for backward compatibility.

The new router had to be configured with the "Cherrinet ISP" gateway details and credentials for the continuity of Service.  So, was trying to take advantage of the feature Export and Import or Backup and Restore options for easy initializing and configuration of the new router.  However, to my surprise the firmware's probably upgraded their Backup and Restore features with out consider the backward compatibility aspect.  The configuration file the conf.bin file backed up from the existing router and imported or uploaded to the new router didn't work probably due to non-compatibility of the conf.bin file with future versions or the new algorithms to read conf.bin file wasn't able to read or restore a previous version conf.bin file.   A point and a note to remember is that the products are from the Same Vendor.   Therefore, the vendors should work on defining a Schema, it's Versions, imports or instances across future versions (Future Compatibility) across vendors would also be great for the customer.  This helps healthy competition and innovation their products, their product offerings and the migrate-ability aspect of routers across vendors.  The only point of concern for upgrade-ability could then be the MACID of the router changes and the ISP may not recognize or reject the Service.  The New Router should be able to ping the configuration details via the Network Protocol to the ISP with the details of the credentials by providing the new router MacID to be mapped with the user credentials automatically would give a ease of use and a great experience or convenience to the user.

Hope the Vendors would look into this aspect or feature.