Migration issue

[Adam Dershowitz]

I am trying to get an existing set of ports into a new machine. 
I ended up wiping /opt/local on the new machine, so I'm just using the migration script and myports.txt. So it is a fresh macports install.
My problem seems to be that I had Xer installed on the old machine (2012 MacBook pro with OS 10.11 ) as a dependant to something else. On the new machine it keeps trying to put xer +universal.  And that build fails.  (I create a ticket for the xer +universal build.)
But I would like to be able to get other ports working. Can anyone suggest why it wants to install this port +universal variant, when the old machine was not? 
I can install the default variant, which grabs the binary.  But, then when I try to run the migration script it tries to upgrade to the other variant, from source, and fails.
I did try removing the xer line from myports.txt but it didn't help (the line just had the default variant)

--Adam
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