Applying for Schengen Visa to attend a conference as a freelance web developer, but have other commercial documents

I’m a freelance web developer from Morocco, I started a small business for selling car parts 4 years ago and have legal documents …etc, I stopped the business 1 year after and focused on freelancing which I’ve been doing for more than 7 years but started full time just couple of years ago. However, I still have the legal documents for selling car parts…etc

Now I have a conference invitation in Germany related to web development and the work I do as a freelancer, I have proves of income from freelance clients, and have letter from a company I work with. My question is: – Should I include the car parts business papers with these documents in the application or not, knowing it’s completely unrelated to what I do at the moment.

Thanks