I think we had a misunderstanding in the ATM idea. In legal terminology, a property is real estate, which makes a ATM cash box being stolen not an aggravated burglary, thus no shootouts can happen as there is no crime severe enough to justify killing police. Albeit, I can see how arguably the ATM itself can be seen as property, but there just needs to be a decision there to draw the line and clear the gray area.
Will V6.1 replace V6 or will it be released as a standalone version on the workshop? If it doesn't replace V6 then all the echo's will not be transferred (some might also not work if you changed a location too heavily)