PIP tribunal pack and historic applications

Hello! I’m in the process of appealing my PIP decision. I have already done MR, appealed, DWP has now responded that they aren’t changing their decision and now I am waiting to be given a date. I have received the (rather large) pack of information from the DWP which to my surprise also includes PIP assessments from 7+ years ago when I have applied in the past and been rejected. I didn’t appeal at the time because I was so unwell and had no support, I simply didn’t have the capacity. However reading through the information now, I realise they made the same incorrect assumptions and presented the same misinformation as fact that they have done now, 7 years later.

So what I’m wanting to know is will I be given the opportunity to discuss this at tribunal and use these past assessments to support my current arguments? Also is it possible that, if successful, my claim could be back dated to one of my earlier claim dates rather than my most recent? Part of the reason I’ve had to submit my most recent claim was because I was told I couldn’t do an MR over the phone (I now know this is incorrect) and that it had to be posted in writing. I did this, but apparently it was never received and by the time I followed up they told me I wasn’t allowed to submit an MR any more and I would have to start the process again. This was last year, relating to a claim started in 2023.

Thanks in advance!