DWU2 wrote:
Just a guess, but I think you may be selecting multiple photos in LR, then right-clicking and choosing Edit In > Edit In Adobe Photoshop. Instead, right click, and choose Edit In > Open as Layers in Photoshop. On my computer, Open As Layers in Photoshop is at the very bottom of the list of choices after Edit In.
Both Menu->Photos->Edit In->Open as Layers and right clicking on one image in the selection and choose Edit In->Open as Layers actually brings you to the same place in Photoshop - one image open, multiple layers in the layer palette, and at the top of the canvas, the names of the contributing LR files - each separated by a dash.