I have an Ink Plus account that I've been wanting to combine points with a Freedom card. I've gotten the 'unexpected error' for the longest time so I decided to call customer service. I simply gave the customer service person the last four digits of my Freedom account and told her I wanted all the points on my Ink Plus card (had the balance on my screen so told her the total amount of points) and she was able to transfer the points immediately without questions asked.