Solved
certificates on two different machines
I will be traveling with a different machine that has my installed certificates.
Do I make new ones or install the originals on the new machine?
If you have the .p12 certificate files, you can just use them on the new machine when you sign your app. If you don't have the .p12 certificates, you would need to rebuild them on the new machine before you can download them and sign your app. The certificates would then be tied to the new computer.