When I make an edit in an external program such as PS and then the changes within LR it always saves them BEFORE the original photo in the filmstrip. I personally don't find this logical as I like working from left to right and would like it to always save the edited version AFTER the original. Does anyone know how I can set this as the default?

i.e DSC-001.nef to appear first, then DSC-001.psd to be placed after the orignal DSC-001.nef file.

Lightroom has a few display orders, including “user-added order” or “capture time”, each with oldest first or newest first. When you make a PSD version of a NEF file, the PSD file gets the capture time from the NEF file. I don’t know why LR displays the PSD version before the NEF file, as they have identical capture times, but if you want to change the display order, you can add one second to the capture time of the PSD file (the menu item is “Edit capture time”, and I think it is in the Photo menu, but I’m not 100% sure). Alternatively you can stack the PSD and NEF file, with the PSD file on top. When the stack is collapsed, you only see the PSD file. As a further option, you can assign somewhere between 2 – 5 stars to the PSD file and one star to the NEF file and then filter out photos with less than two stars. For me, one star means “keep but don’t show”.

Regards, Antero