Allow disconnect of any level of multistory stairs and allow explode to individual stairs. This should allow improved workflow through the design process.
Currently the original level used to create multistorey stairs cannot be disconnected, so in a typical workflow if the stair is created at ground and then multistorey used to quickly populate the stairs up the building then the ground floor stair needs to have a special arrangement the only real option is to start again.
Likewise in low rise buildings the multistorey can early ony be used to put the stairs in at sketch design but later if ground and top flight become special cases then in would be more efficient to explode and edit each flight than to use multistorey.
