Submitting Amended T4 Summary and T4's

Can I EFILE amended T4 Summary and Amended T4’s or do I have to send via mail?
Thanks.

You can amend it in TaxCycle. Just check the box that now likely says “original” and choose “amended”. Then you can transmit the amended slip(s) the same way that you transmitted the original slip(s).
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Awesome. Thank you so much for your help, Kevin.

I have amended a T4, following Kevin’s instructions, but when I select “Transmit”, no link appears for me to commence with the transmission>

In the Transmit section you need to select the Amended slips. There should be a drop down arrow.

There is no separate transmission for amended slips in the Transmit pane. To file the amended slips, dismiss the existing transmission and then you will see the amended slips to select and file.