What we're trying to do is ensure we have sufficient capacity on the T1 processing side to deal with the amended T4s being issued to employees who find themselves with a Phoenix issue. Where the initial T4 from the employer is wrong and the amended T4 comes in after the fact, we want to make sure we're able to process that in a timely manner, very quickly for those employees, so that we can rectify certainly the tax situation for them at a minimum.
On March 1st, 2018. See this statement in context.