Rental Property deeded to sibling

 I have a client with a schedule E for a rental the past 8 years. The house was originally deeded to he and his father (this information was never given to me 8 years ago) Were father and son listed as Jt Ten, or Tenant in Common, or (Do not know that and my client cannot find the original deed) ... when his father died in 2019 the deed was changed to he and his brother (this information was not given to me). Was this passed via probate? Trust? Did brother inherit Dad's share? (Brother inherited his dad's share upon the dad's death) On February 18,2020 the deed was changed and his brother is now the sole owner of the property. Did brother sell out to brother? Did brother gift to brother? DId one brother get another house and gave this one to equalize.(None of the above, the attorney just changed the deed to take my client off and have his brother sole owner) How do I process that on my client's return? Ask many more question (I have tried but they do not keep paperwork and this was all brought to light with the 2020 return as, by the way I deeded the house to my brother!)The new owner has not decided if he will continue using the property as a rental. This is not pertinent. Was it a rental in the year(s) you are doing the tax return? (yes)

By his father's attorney (he and his father). His father passed away and his brother's name was added to the deed through his dad's will. His brother then was deeded the house in 2020 by an attorney.,

His brother never received income from the rental the entire time it was rented and was not an active participant in the rental.