Sales Order (Auto-Generated Numbers) does not follow Standard Pattern

Scenario: Order #(ID: Tran ID) does not follow standard pattern of Auto-Generated Numbers on SO.

1. Using an Administrator Role.
2. Navigate Setup> Company> Auto-Generated Numbers> Document Number tab > Sales order.
3. Please check the following.

Value of Initial Number
Value of Current Number
Allow Override checkbox = T

When you create a new SO:

1. The Order# field (ID: tranID) is automatically populated with the next value set on the Current Number under Auto-Generated Numbers. Since Allow Override = T, user can override value here.
2. If the user set a value on the Order# field which is lower than that of the Current Number, the value of the Current Number under Auto-Generated Numbers is not updated.
3. If the user set a value on the Order# field which is higher than that of the Current Number, the value of the Current Number under Auto-Generated Numbers is updated.
4. It is important that Allow Override for this setting is unchecked if there is no business use for it.