(1) The following procedure shall apply with respect to a request for bifurcation relating to a preliminary objection:
a)
unless the parties agree otherwise, the request for bifurcation shall be filed:
(i)
within 45 days after filing the memorial on the merits;
(ii)
within 45 days after filing the written submission containing the ancillary claim, if the objection relates to the ancillary claim; or
(iii)
as soon as possible after the facts on which the preliminary objection is based become known to a party, if those facts were unknown to that party on the dates referred to in