"In late March 2022, the [IRS] withdrew regulations proposed in 2019 and issued new proposed regulations under Sections 413(c) and (e) of the Internal Revenue Code, which provide for an exception to Section 413's 'unified plan rule' -- commonly referred to as the 'one-bad-apple rule' -- for multiple employer and pooled employer plans.... Compliance with the new proposed regulations is deemed to be good faith compliance with Code Section 413(e) until final regulations are issued, which now provides plan administrators of MEPs and PEPs wishing to utilize the exception the ability to do so before the new proposed regulations are final."