Moving a negative item to positive on credit report

I am not sure what to call this but how do I deal with it
I owed HSBC money
they sold their account a collect agency
I filed bankruptcy
the changed the status to included in Bankruptcy
I hired Lexington Law Firm
Lexington disputed
Now it appears under Positive credit on experian as follows:
Is there a letter I can send to someone to get this taked off my experian credit file please help