How to increase the number of expiration days for suspended transactions in xstore?

In my SysConfig.xml, I have the following property configured

<Setting name="OpenClose---RollingClose---SuspendedTransactionsLookback">12</Setting>

My understanding is that this should allow suspended transactions to remain active and retrievable for 12 days before they expire. However, when I perform a store close, Xstore still forces me to cancel these suspended transactions immediately, even though the 12-day period has not passed.

What I want is the following behavior:

• Suspended transactions should remain available across store closes for up to 12 days.
• Only after 12 days should the transactions expire.

Can you explain how to configure Xstore so that suspended transactions persist across multiple store closes within the configured expiration window, instead of being forced to cancel them at each store close?