By default, Form Publisher generates documents in the Form Publisher's Output Folder. Form Publisher creates this folder in your Google Drive (under My Drive).
This means that when you have a Google form configured with Form Publisher, you have all of the following files and folders in your Google Drive.
When you have one or more connected forms, you have these additional files and folders in your Google Drive.
If you have multiple Google forms configured with Form Publisher, you end up having multiple Form Publisher's Output Folder in My Drive.
To avoid having to navigate multiple such folders, create a separate folder for each Google form you intend to use with Form Publisher and move all related files in it.
This keeps all documents and folders related to the Google form and Form Publisher in a single folder so that you can find them easily.
You can apply the same principle to any new Google Forms that you configure with Form Publisher.