Since TaxCycle allows you to enter the date of change for marital status, II triggered this dialogue with Mark @ TaxCycle:
Does the ‘Date of change’ for Marital upload to CRA’s computer or do the recently wed, etc. (in 2018) still have to submit an RC65?
Reply: We only include the marital status indicator not the date of change.
I am preparing an RC65 as always.