Miss. Code Ann. § 11-1-39: Miss. Code Ann. § 11-1-39

When the papers have been deposited in the court to which the cause was transferred, all the parties to the proceeding shall take notice of the fact of the transfer; and the complainant or plaintiff shall file his declaration or bill in the court to which the cause was transferred within thirty days, unless the court, judge, or chancellor shall restrict the time or grant further time; and the defendant shall plead within thirty days thereafter, unless the time, by like means, be restricted or extended. And the cause shall be proceeded with as if it had been originally begun in that court, as of the date on which the cause was originally instituted.