What reporting & tax differences exists when a former employer reports income via 1099 using an Ind. Con. SSN vs. the EIN of the S-Corp they established during that year?

I worked as an independent contractor with a real estate company in Florida in 2017. In September of 2017, I filed the paperwork and successfully established a sole proprietorship (PA: Professional Association) with an effective started date of January 1, 2017. I'm wondering what are implications if my former employer reports part or all earnings using the SSN instead of the EIN (earnings were about $80K, 2/3s of which was paid out prior to filing the paperwork). If the employer's reporting method is improper, or there are negative consequences for either party, what are the workarounds or recourses for the new business? It seems it should be reported via the EIN given the incorporation date. I've tried to research this, and wasn't arriving at an answer. Your help is much appreciated!!