By PDF you mean a posted letter?
It's confirming the type of install you're receiving, the letter may also state that credits may apply to those charges, typically you will always receive a $99 broadband connection credit on your first bill, it is stated in the letter for instances where people may take a no term contract.
Regarding the date, that may be the earliest available date generated for a Chorus booking.
If you were reassigning from another provider and moving onto TelstraClear UCLL, it is still technically a new connection, hence the listed types of fees, however those charges are waived.
Anyway, I agree it can be confusing, if you have any issues with it, flick me your account number via DM and and I'll try to explain it better by checking out your account and the dispatched letters.