This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2016 census indicates that No Religion and Jedi Knight are the fastest increasing classifications of the optional religion question "What is the person's religion?" it is not surprising that there is surfeit of empty churches that have been repurposed.
The former Murray Town Uniting Church property is now privately owned. Opened as Bible Christian, Methodist after Union in 1900, became Uniting in1977, amalgamated with Booleroo Centre & Wirrabara Uniting 2016. Sold in 2018.
Using the digits of the year ABCD on the foundation stone that can be seen from the footpath you can determine the location of the geocache.
S32° 56.(B-B)AD' E138° 14.(B-D)(D-A)D'