Edit Fortnightly Billing Date
The booking is active
Scenario 1: Booking is Active — Only Fortnightly Billing Date is Updated
System behavior:
Example:

Scenario 2: Booking is Active — Asset Swap + Billing Date Change in One Edit
System behavior:
Example:

Scenario 3: Booking is Active — Other Changes (e.g. Base Fee)
System behavior:
Example:

The booking is Requested or Confirmed
Scenario 4: Booking is Requested or Confirmed — Billing Date Change Not Allowed
System behavior:
Example:

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