Effective date question

[Remisdad]

The first photo is my claim that's at BVA. The second one is my IU claim that just closed. Denied IU granted me another 10% with an effective date of March 1st 2021.  These are the same injury so should the effective date go back to my original claim of January 2016?  The VA keeps me confused 95% of the time. I'm definitely appealing but do I need to appeal the effective date as well?  

[Buck52]

Well your effective date for increase would be the date the Dr mention you had a 10%increase usually the date of your IMO As I understand since you were service connected with a rating before this increase.  unless you filed for the IU as an increase? THEN THEY USE THAT DATE AS YOUR EED  OR WHEN A DR MENTION YOU WERE UNEMPLOYABLE DUE TO YOUR SERVICE CONNECTED DISABILITY. OR FACTS FIRST FOUND DATE.

Example I filed my first claim for severe hearing loss April 4th 1998..I was  denied right out of the Shute NOD AND service connected  About 11 months later...I reopen this claim in 1999 and was given a 50% rating in 2000. Based on a VA HEARING TEST I had.

in 2002 I filed for an increase due to my VA VOC-Rehab counselor could not find me any work i could do and lack of education I could not hear well enough even with hearing aids  so class work was out.. so due to my now service connected disability hearing loss at 50%  he had me apply for increase. I went got a new IMO to make sure my hearing loss was indeed worse  and it was according to this specialist ENT I WENT TO TO RETEST MY HEARING ON Dec 10th 2002 AND MADE SURE HE WENT WITH THE VA GUIDLINES AND HEARING TESTING CRITERIA SET FORTH BY RHE VA THEM SELFS.

On May 7th 2003 I was granted my increase based on this IMO  I HAD ON Dec 10th 2002  as my EED due to this was my only evidence an increase was first found. Dec 10th 2002 is my correct EED on the 90% plus IU

Now  my 50% service connected rating goes back to the 2000 date as my EED ON MY 50%