I held this one through the conversion and then got out at NAV shortly after.
The unlisted shell of MA1 that held assets that could not go into MAAT paid the final dividend in Sept 2022, is that the one you're chasing? From memory they mentioned it was the last distribution and the unlisted Co was meant to be wound up this FY. Now that i think about it i wonder if there's a potential ability to claim capital loss, is that what you're after?