question about sheetcam TNG updates

Les today I opened a job which I last used a approximately a year ago and got this message as job opened. Some duplicates in this job were mirrored differently to their parent. this is no longer allowed so they have been converted to copies . When was this changed and will it effect anything else.

If I remember correctly it was around V2.1.4. Your job should cut exactly the same after conversion. This change was made to work around the problem of mirrored parts reversing their cut direction.

Thanks for sharing your experience plyman.