231 Pa. Code § 1910.6
Parties to a support action and their attorneys shall be provided notice of all proceedings in which support obligations might be established or modified. Notice must be provided at least 20 days prior to the proceeding. The parties and their attorneys shall also be provided with a copy of any order issued in the support action within 14 days after issuance of the order. If there is no activity in a support action for a period of three years, the domestic relations section shall send a notice to each of the parties' attorneys advising each attorney that his or her appearance in the support action shall be deemed to be withdrawn unless the attorney objects within thirty (30) days of the date the notice is mailed to the attorney. An attorney representing a party in a support action shall not be deemed to be representing that party in any other action, nor shall a withdrawal of appearance in a support action be deemed to be a withdrawal of appearance for the party in any other proceeding.
231 Pa. Code § 1910.6