Eligibility Based on Specific Seniority Date

Summary

How do I create an eligibility profile for a revised seniority date?

Content

I need to create an eligibility profile based on an updated seniority date.  My employee was originally hired in a non-benefits position on 13-Jan-1992, and then they were rehired into a benefits-related position in 6-Nov-2014.  We recently went live, and there is no assignment that reflects the 2014 date.  So, I've created seniority date based on Job where I change change the days of the seniority to allow length of service from the 6-Nov-2014 date (which works fine for length of service eligibility). 

But...it doesn't allow me to create an eligibility profile based on that changed date.  I'm using the eligibility profile on a variable rate to change the rate when a worker was benefits-eligible before 1-Jan-1997 or after.  So...the 1992 date makes that rate incorrect.  I need to based an eligibility on the 6-Nov-2014 date instead.