I recently was reviewing post race "stuff".  I ran a routing with "start now", and was surprised to get results since all the gribs were dated a minimum of five days prior.  How can this happen?

I cleared all files from the weather, settings, grib panel, thinking that would tell Exp that there was no grib data available.  The grib file folder contained all my recent history of downloads, but all were "old" compared to the race start time of now.  I clearly am missing something about how Exp creates an optimum route.

Can someone please direct me to documentation, or help with an explanation?

TIA, pjl