0.delete file 0-merge_graph-Last used.ois in UFF’s subfolder if exists.

1.New a project, Make grouped box-indexed data plot (or other plot) output graph to result sheet to generate multiple graphs in result sheet

2.With Book1 active, click Merge Graphs toolbar button.

? It lists all graphs embedded in Book1.

3.Cancel the dialog, another Graph, click Merge Graphs toolbar button again.

? It lists non-embedded graphs, click OK.

4.Activate back Book1, click Merge Graphs toolbar button again.

==> it still listed non-embedded graphs.