MRP Settings - Load Calculation and Production Lead Time

MRP Settings have the load calculation at 26 weeks.

The production lead time is set to Routing/Product Lead time

From what I can see in the load graphs, I only see load for 6 months.

and from the MRP results, I can see that the routing is used for the first 6 months and then the product-site lead time after that

If I change the load calculation in the MRP settings to say 52 weeks, does this mean that we will:

  1. use the routing duration in the MRP to set the start and dates
  2. will then be able to view the load for the next year

then also, does that mean that the product-site lead times are never used to calculate load on a work center ?