I believe both cards have to be open a minimum 12 months before combining and the one you're combining from has to have a zero balance. You can pc the qs as long as there's an offer, but you have to call in since the savor isn't offered through the link or normal channel. But, as long as there is an option to pc, a quick phone call should do it. Don't forget to request your CLI on the qs before combining as the combination will count as CLI.
List of cards:
Chase Freedom- $13k CL
Capital One QS- $10k CL
Citibank DC- $11k CL
Capital One Savor- $10k CL
Is there an advantage to keeping the newest Savor card open when I can just combine it with the QS line and PC the QS line to a Savor for the rewards? Doing this lets me keep the Utilization and the closed account will remain on my credit report for 10 years anyways. The reason I have moved away from the QS is the higher rewards rate on the DC.
I'd keep the CapOne card with better terms regardless of age. You can always PC it to the product you want eventually, but not the terms. If the QS is one of those "bucketed" cards, I'd combine it into the Savor (if it has better terms).
I also wanted to keep my older card: 7 yrs old vs 1 yr old. However, the older card was a "rebuilder" card that grew over the years from $500 to $8k, but was definitely in their sub-prime bucket with a very high APR and small CLIs. The 1 yr old Venture started with a $30k limit at the lowest APR and got a CLI to $33k. I kept that card and combined the old one into it for a $41k total CL. It's been PCed to Savor for a few months now..
Unfortunately, I don't use it as much anymore because I have better cards, but I always wish Cap One came out with a premium card.