Okay first things first.
3DS #1 is a standard red and holds: 800+ hours of mh3u from eshop and 200+ hours of animal crossing new leaf from eshop.
3DS#2( the main 3ds) is a limited edition triforce gold and holds: 2 100% ALBW game files plus the game itself from eshop. I also have sonic lost worlds and fire emblem dlc.
What the question is: how can i combine everything despite having the 2 3ds' linked to other nintendo accounts? I read the transfer guide and it says some data wont get deleted but im scared to lose anything from either side... any help or tips would be much appereiciated and nintendo already did not reply to my email ticket for 3 weeks already. Also i dont want to say why this situation came up, it just did..