RE: "If any of those guilds have invested materials and time in to acquiring the same the same level of Synthesis upgrade (the Wiki refers to "upgrades" which would include both Tier improvement and quantity improvement, however I discovered that it only applies to the same level of Synthesis), then harvesting in one Guild Hall NULLIFIES the ability to harvest in the other(s)." I'm not sure that is wholly accurate. Hopefully someone can correct me if I'm wrong but here is a specific example where node specific level versus synthesis level doesn't appear to be functioning in a consistent manner w/ regard to whether or not the node disappears from one hall to the next. GH#1: Lumber 1, Output 1 - GH#2: Lumber 1, Output 0. Unable to harvest from both guilds in a given day. I think there are a couple of other exceptions which seem to refute any hard rule I try to formulate regarding the combination of node level and synth level. I've started tracking which guilds I harvest, in what order, and where all their upgrades are at the time. I'm keenly interested in figuring this out as I level up my own guild such that it doesn't conflict with any of the other 4 I'm in. Possible complicating factor... I do have a glyph of bounty loaded in my logging tool. Tomorrow I think I'll pull the glyph just to be sure that isn't having an unintended consequence on the results.