The ruling on appointing someone to perform Hajj on one's behalf for an excuse, then the excuse ceases

The question: Also, Rashid ibn Ahmad al-Rashid from Dammam in the Eastern Region says in this letter: If a person who is afflicted or has an excuse appoints someone to perform Hajj on his behalf, and after the appointee enters the state of ihram for Hajj and assumes its obligations, the person with the excuse recovers, does this Hajj count for the person with the excuse? Does it count as the Hajj of Islam, or is it a voluntary Hajj in his case?
The answer: There is a difference of opinion among the scholars regarding this, and it is postponed until we answer it in another session, if Allah wills. There is a difference of opinion among the scholars regarding this issue; we will answer it, if Allah wills, in another session after reviewing and paying attention to the matter. Yes.