Hello,
Without an example file that is hard to trouble-shoot, but I guess that you used the "Merge" command to put the series of commands together?
Now movement commands have often gone through a series of operations that introduces additional data structure, while Wait commands consist of just a single component and its output.
If you put the data into a panel, it shows you the branch name on top, e.g. "{0;0}". A wait command may just have {0} and would therefore be put first.
The "Simplify" and "Flatten" options could help, either use them as a separate component or by right-clicking an input - for example by enabling "flatten" for all inputs of the Merge component.
Please note that this is a GH thing and not directly related to KUKA|prc.
Hope that helps - if not please attach a simple example to illustrate your problem!
Best,
Johannes