It’s all quite weird.
As far as I know, MK had a vocal injury and was out for a month, hence why Jodie Steele was brought in, but after her return, the injury returned and another LOA recovery would have taken her through the end of her contract anyway.
As for Olivia, based on my experiences, she was out far more than she was actually in, so the producers probably found it was within their right to terminate her contract. Of the 8 times I went from July to December, all different days, Kiara Michelle Lee was (an amazing) Duke for 6 of them. Looking at the historical record on Understudies.org also showed she was not really there. I can see why production didn’t necessarily jump at the chance to have her back when she was clear since her absences may have posed an ongoing liability to the production (especially if many other were out as well).
Check out my eBay page for sales on Playbills!!
www.ebay.com/usr/missvirginiahamm