Please be aware there is an issue when editing any Vision 3 Guideline post release DLM 830.
If you select to add a date to a new Guideline, or update a date on an existing Guideline, Vision 3 is currently inserting $$ into the date:

This prevents your Guideline working in the the way you designed.
To address this issue, from the screen you are updating, manually delete any occurrence of $$ and then select OK:

Note - A fix for this issue is being worked on and will be rolled out as soon as it is ready and tested. We are sorry for any inconvenience caused.