Great to hear!
To clear any confusion with my last answer:
With the Muster-In, Muster-Out Cards: Find the earliest date on the entire card, then choose the location associated with that date if possible. If not, choose the next location on the card.
With Muster Cards: Choose the earliest date on the entire card, DO NOT key any location.
The discussion page explains it much better than me!
It's also helpful to check your keying by going over the card at least once before you move on. It's easy to make an error. Takes some concentration, too.