I'm a dual Canada/UK citizen, resident in the UK. I fly to the US and home to Canada reasonably regularly, and other places.

I have US Global Entry on my UK passport, so need to use that to get into the US. The Canadian authorities insist you use your Canadian passport when entering, or get an eTA.

This means when I try to check in online for either US or Canada (depending on which passport is in profile) I get stopped. In theory I re-enter details, but if you look at your BAEC profile, you'll see that you *can* change your date of birth and can even change your gender (I haven't tried this feature of the profile, but it's clearly marked). All this and I cannot enter the detail for my other passport.

Long term the solution will be to get Nexus in order to shift the US Global Entry to my Canadian passport, but that'll take a while logistically. In the meanwhile...I'm resigned to the idea that I'll have to carry both passports travelling most of the time, and I'm fine with that. But re-entering alternating passports into the BAEC profile just seems dumb. And I'm not thrilled with the idea of waiting to check in at the airport.

Has anyone else hit this problem? Is there some elegant solution I'm missing?