I'm reviewing the PIER report for my company and I'm discovering that many of the employees have higher pensionable earnings than their insurable earnings.  It's not a large difference, nor is it consistently the same for all employees,  there are no benefits for these employees that would explain the difference either.
I've tracked it down to one pay period in January where everyone paid that period has a higher amount of pensionable earnings vs insurable.

This was the pay period where I had to manually enter the statutory deductions as the basic amounts from CRA were changed at the last minute and Sage didn't have the updated tax tables.
That doesn't explain in my mind why the pensionable earnings would be different from the insurable.

Should I just go in and manually adjust everyone's Ins. Earnings to match the Pens. Earnings?