Hi. When i create preset for profile of curve , i can set sync on all curves an can update or change it . But when i reopen project , the sync is on but profiles are not changing for all curves.
I think sync is only active if you activate all profile sections on the nodes - in your case only 1 profile is active for all nodes. (1 dot VS 3 dots)
Not sure how it should work, 
but there is different behavior after reopening project. In first image you can see word “test” next to sync. That is my preset for curve and when i edit that profile, all three curves are udpading. But in my second image after re-opening, that word “test” its gone and changing profile only update one curve. Im making hair for character and have around 20 curves so I tough that sync can help me edit all of their profiles so i can test how it will look. 
Yes, I think sync is lost after saving and reopening the file.
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I’ll check it out, it’s indeed lost.
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