How long are quotes valid for?

Forever, and ever...

Quotes in your CRM do not expire. You may have an effective date to work around however if that effective date is flexible you can return to a quote at any time and make edits. Click the "Continue" button in your CRM in order to return to the application questions. 

If the product or application has changed in any way since you first filled it out it will automatically update and ask you to fill in the new questions.