One trigger refreshes SEVERAL update containers from a SINGLE request via updateContainerID="a;b;c" (the server frames each container in an <ajaxslim-fragment>, the client demuxes and morphs each). Each box has its OWN counter so we can prove each fragment landed in the RIGHT container.
Box A (morph)
0
Box B (classic)
0
Box C (morph)
0
"ghost" is not a real container - it must be skipped, the others still update, and boxB (not targeted) must stay unchanged.
Bump A & C (one request, one missing)