The Township Board of Commissioners may, from time to time, amend, supplement or repeal any of the regulations and provisions of this chapter after public notice and hearing. Before the public hearing, each proposed amendment, except those prepared by the Township Planning Commission, must be referred to the Township Planning Commission for its recommendations at least 30 days prior to the hearing on such amendment. If, after any public hearing held upon an amendment, the proposed amendment is substantially changed or is revised to include land previously not affected by it, the Township Board of Commissioners shall hold another public hearing, pursuant to public notice, before proceeding to vote on the amendment. At least 30 days prior to the hearing on the chapter amendment by the Township Board of Commissioners, the Township Planning Commission shall submit the proposed chapter amendments to the Cumberland County Planning Commission for recommendations. Amendment procedures shall be in compliance with Section 609 of the Pennsylvania Municipalities Planning Code, Act 247, as amended.