I just merged 2 accounts succesfully, resulting in 2 isis numbers being shown below "your isis"
The "your status" icon still reflects only one of the two Isis though.
Cicking either one of the Isis numbers shows the next page, with access to the pyramid map only for the Isis with no coin claimed, as expected.
This suggests the rest of the page (including pyramid map, selected pyramid and guessing puzzwords) is on a per-Isis-basis.
I cannot check all of that though because I have 0 puzzword credits (which is the correctly merged total from both previous accounts
)
This (account merging) apparently has been thought out properly, except for the "your status" icon which should be per-Isis too.
For people owning more than one Isis, it would be nice to have 'isis names' in stead of 'isis numbers' to click on (e.g. "found isis" "eagle isis" "Isis 1A").