if a structure is wildly used, once modified, all the connections with the structure in other blueprints will broke.
the only way we can solve this now is open each BP using the structure and compile it manually.
the bug hasn’t been solve even in the version of 4.14
i think i have met the exactly same issue,too. so it is hard for me to modify a structure, because it will destroy any connections with the structure node.hope it could be solve in 4.15.
I would love for this not to happen as well. P.S. You mean “widely used” instead of “wildly used” 