I have a collection of dates that I use the Collection Manipulation action "Sort Collection", there are no other columns in the collection and the data type is set to Date (in both the input and output collections).
Dates after the switch to BST are being moved back 1 day during the action, so 27th March becomes the 26th. I'm guessing this is because the Date Time is set to 27/03/2018 00:00 local time (even though the data isn't in this format), so when it sorts the data items it uses UTC meaning 27/03/2018 00:00 becomes 26/03/2018 23:00. Dates during GMT are not affected.
Any ideas how to fix/get around this issue?