Yingbo fix

Author: Brad Carman

src/systems/connectors.jl

@@ -263,12 +263,6 @@ function generate_connection_set(sys::AbstractSystem, find = nothing, replace =
         !any(s -> is_domain_connector(s.sys.sys), cset.set)
     end
 
-    #   Calling merge(connectionsets, true) 
-    #   needs to run with sys expanded equations, if we have more connectionsets then domain_free, then a domain exits, run again...
-    if length(connectionsets) > length(domain_free_connectionsets)
-        # connectionsets_ = ConnectionSet[]
-        sys = generate_connection_set!(connectionsets, sys, find, replace)
-    end
     _, domainset = merge(connectionsets, true)
     sys, (merge(domain_free_connectionsets), domainset)
 end
@@ -402,7 +396,7 @@ function Graphs.outneighbors(g::SystemDomainGraph, n::Int)
     for s in g.csets[i].set
         sys = s.sys.sys
         is_domain_connector(s.sys.sys) && continue
-        ts = TearingState(s.sys.namespace)
+        ts = TearingState(expand_connections(s.sys.namespace))
         graph = ts.structure.graph
         mm = linear_subsys_adjmat!(ts)
         lineqs = BitSet(mm.nzrows)