Is appointment of representation automatically carried over from one application to another?

I previously applied for social security disability and I appointed a representation using form SSA-1696. I later withdrew my application. If I apply now for a different period of time and condition, will that previous representation carry over to my current application? In other words, will the company which represented me previously still be my representative in social security system and therefore will be able to get information about my current application? If so, how can I relinquish that representation for my current application?

Thank you