Yesterday I lost a 40min take because of this zooms software design error (it overwrites same name takes). Both my f8 and f4 recorders have the same issue. I haven´t had any problem with other brand recorders like sound devices or roland in my 10 years of experience (I have a sound devices 664 too). I´ve just lost this tv program because of this issue, very dissapointing. (Sorry for my english level)