Yes, you can split the amount in Box 18 provided it is a lump-sum payment from an SPP or money purchase RPP.

Have you made sure to indicate on the T4A screen that Box 18 is a payment from an SPP or money purchase RPP?

I had completed the inputs as you indicated however the amount is not included when I split my pension income later on in the process. I noticed that the amounts show up as "other income" on line 13000. Could this be the problem?

We would recommend contacting our phone support team at 1-888-829-8608 as they will be better able to assist you. They can look at the return with you to see what is going on.