upgrading with variants

[Lenore Horner]

Am I correct in thinking that port upgrade outdated will ignore the  
variants of the port which exist and upgrade to the current default  
variant?  If so, why?

I'm asking because I just did this and I had the quartz version of  
gnucash installed with neither aqbanking nor libofx but the upgrade is  
installing gwenhywfar on which only aqbanking depends.

Do I have to upgrade each port by hand remembering what variant I've  
used?

Lenore