Dual-Sim, Dual Exchange contacts - Only one shows

[FuriousRage]

HI, i have an Huawei Honor 5X, using two sims, this works nicely.
However, i have two MS Exchange accounts, but contacts only shows from one of the exchange accounts.
I am using the default/built in mail app, same as default contacts.

How can i get both contacts to show?

Using:
Kernel: 3.10.49-g5135c76 d00903065@ubuntu #1
Android version: 5.1.1