Can someone help me out with my thinking process? 😄 Policy is bound to master and clones. Cache Disk on Master is getting formatted and on clones too. Existing Cache Disks will not be reconfigured/expanded and I need to delete the VMs and redeploy them.

The clones only need to know the write cache drive letter. Once created and formatted, BIS-F won't expand the disks for you. Instead of deleting the VMs and starting again, you need to do increase the size of the disks assigned to each VM in VMware. Then have a startup script that expands the disks in Windows, using diskpart or equivalent.