Is there widespread misunderstandings about how they work?
Or could it be a broad belief that regular expressions are generally slow?
Removing the account from the phone first would be the easier approach. I was able to remove the account from the phone then delete the leaf object and it worked great.
They try to find a way around regular expressions and accept additional coding just for the sake of it, even if a regular expressions would be a more compact solution.
Why are regular expressions considered so controversial?
The error we got was 2015-02-02 ERR22 Failed to move source object 'CN=John Doe'.
hr=0x8007208c The operation cannot be performed because child objects exist.