You did do it correctly however due your server host is limiting the rate at which it sends you each line to 30/s (24.07 18:46:52 [Multicraft] Skipped 3179 lines due to rate limit (30/s) so, can you open the most recently modified server.log file to pastebin because it will include every line. Although it may just be the 15 lines it spits out for every missing wire(below) but hopefully it contains helpful information. So far it's definitely not an issue with consistecy between the server and client because the server says in the log that there is air where it expected a cable that was meant to be updated so, we just have to figure out what happened to it. I saw the other thread you referred to in the op and they said it crashed the client when spawning in redstone wire, backup the map then try both spawning in redstone wire and setting a 1 block area to redstone wire with worldedit.
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:208)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:359)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:86)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.ChunkProviderServer.loadChunk(ChunkProviderServer.java:143)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:54)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:65)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:297)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.Chunk.a(Chunk.java:649)
24.07 18:46:51 [Server] SEVERE at net.minecraft.server.Chunk.a(Chunk.java:675)
24.07 18:46:51 [Server] SEVERE java.lang.Exception
24.07 18:46:51 [Server] INFO Chunk coordinates: -64,16
24.07 18:46:51 [Server] INFO Attempted to place a tile entity (eloraam.wiring.TileCable@a1c22e0) at -63,191,17 (AIR) where there was no entity tile!