When trying to insert dates in the format mmddyyyy using workflow the system rejects it. When I apply the short date format "d" to the token it still gets rejected. The only solution I have found so far is to create this huge entry to insert dashes.
%(PatternMatching_Token 1#<(\d\d)\d{6}>#)-%(PatternMatching_Token 1#<\d\d(\d\d)\d{4}>#)-%(PatternMatching_Token 1#<\d{4}(\d{4})>#)