3D traffic signs in rfa format

Hi. I have a rfa file that includes 6 traffic signs 3D, it has been created in Revit:

but when I open or reference it with OpenRoads, graphically I only see a traffic sign, the one that is active in Revit:

there are 6 signals but I only see 1:


I am attaching the rfa file and please tell me how I can select the rest of the signals. Thank you!

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