(a) The condominium instruments may provide for the withdrawal of any portion of the property in connection with eminent domain proceedings in compliance with the provisions of this Act. Upon the withdrawal of any unit or portion thereof, the percentage of interest in the common elements appurtenant to such unit or portion thereof shall be reallocated among the remaining units on the basis of the percentage of interest of each remaining unit. If only a portion of a unit is withdrawn, the percentage of interest appurtenant to that unit shall be reduced accordingly, upon the basis of diminution in market value of the unit, as determined by the board of managers. The allocation of any condemnation award or other proceeds to any withdrawing or remaining unit owner shall be on an equitable basis, which need not be a unit’s percentage interest. Any condemnation award or other proceeds available in connection with the withdrawal of any portion of the common elements, not necessarily including the limited common elements, shall be allocated on the basis of each unit owner’s percentage interest therein. The declaration may provide that proceeds available from the withdrawal of any limited common element will be distributed in accordance with the interests of those entitled to their use. The condominium instruments shall provide for the cessation of responsibility for the payment of assessments for any unit or portion thereof withdrawn from the condominium. In the event that the unit owners’ association is named as defendant in an eminent domain proceeding on behalf of all unit owners, then the payment of the proceeds of the eminent domain proceeding attributable to the taking or damaging of the common element shall be according to this Section unless the condominium instrument or declaration of a common interest community expressly provides for different procedures. This Section shall also apply to eminent domain proceedings in which the unit owners’ association of a common interest community is named as a defendant on behalf of all unit owners.
     (b) Notwithstanding anything to the contrary contained in this Section, in a leasehold condominium, any allocation of any condemnation award or other proceeds available in connection with the withdrawal of any portion of the property shall include an equitable allocation to the lessor. The allocation shall take into account any provisions of the lease described in item (x) of Section 2 of this Act concerning such allocations.