[Update: When creating a preset with the same name as an existing one, clicking Replace doesn't overwrite the old version. See here for a precise recipe:
https://feedback.photoshop.com/photoshop_family/topics/preset-not-refreshed-after-adjusting-cc-class...
-- John Ellis]
I use to create a new preset for every customer-shoot.... say NAMEXX.
When customer is on site i shoot colorcards and grey for LR even finer preset-setting....I measure and than always saved overwriting the NAMEXX preset that was created before actual shoot... LR warned that preset already exists but after confirmation overwrites and from there the new-adjusted is used with AUTO-IMPORT reading from the incoming NEF file.Since latest updates this does not work anymore..it seem old one is not over-written or at least not used from there onwards (flushing ??).... please check !
Ps Also in line with this i would LOVE to see the mouse-scoll-button activated rolling though existing presets while selecting the one for AUTO IMPORT.
TIA.. Gerard