Hi there! If I recall correctly, the other dialogue in the additional dialogue will not display if the nvl value is set to True in the game's script.rpy file. Example of the line you can search for in this framework's script.rpy:
menu (nvl=True):
Thank you for the clarification. Since the issue is persisting, I would recommend starting with the framework's script setup and adding (pasting in) your visual novel's custom scripts around it, rather than the other way around. This would help to avoid missing any lines of script that are being left out through the transfer.