...but I had not been setting them to project memory only. I just created a french conversation tutor with a voice user interface using files that a ChatGPT chat gave me when I asked it to create the source files for how I wanted the project to behave and what the goals were. So I downloaded the zip file and used the output .md files as the source for my project. I probably should have created a Custom GPT that I can share! If it works out well, I will.