Can beam nodes/IDs be selected in the Time History Location (THL) file?

Hi, we have a complex model containing pipework and its corresponding structural supporting frames, and would like to apply a ground acceleration time history to the frame support points where they connect into the building structure. However, when selecting these in Time History Location, AutoPIPE (Version provides the following error message stating the beam nodes are "Invalid Point(s)". Pipework points and supports can be selected in the THL dialogue box. Is there any way to apply a Time History to beam nodes (or any neat workarounds suggested)?

Kind regards,