On what lines on my return should the amount entered in box 10 on a T5007 appear to reduce your taxable income.

In my case, I see entries on line 144, 229 (employment expenses) and line 250 (other deductions) which has reduced my taxable income by twice the amount entered in box 10 in the T5007.  This has increased my refund substantially but unfortunately I believe it is an error.  How can remove one of the entries (either on line 229 or 250).  The reason this happened is because Workers Compensation paid my employer and my employer in turn paid me as if I was still at work.  My employment income on my T4 did not change for the year and I received a T5007 in my name for the wages they paid my employer.