Manufacturing lead time is pulled from 15.13 Routing, not from 1.4.17.
It is calculated from the Wixon Cum LT (13.12.23 is the best view) which gets it from the routing.
It is Mfg LT + Insp LT (which defaults to 1 business day).
There is no routing for this item, thus the Mfg LT is calculated in Wixon Cum LT as 0.
The information pulled in from the routing calculates Mfg LT as follows:
(Run Rate / Unit * Standard Batch Size / standard work day hours) + Wait + Move + Setup.
Without a routing, the lead time should be coming across to Galt as 2 calendar days (1 business day X 7/5 rounded up) as of now.