In a disabled configuration, delete some variables.
Click 'Exit Wizard' or 'Continue'
Go back to the variables - the deleted variables are there again
First time I've used configuration variables is in 892, so not sure if the problem existed in my install before. I cannot find anything in the event log regarding the variables.
+1. I found a similar issue which, I assumed was a stale data cache issue when editing things within Continua 892. Alternatively a PEBKAC issue of me rushing through screens .