Hello Jim,Prefacing the two files with A and Z did the trick.I'd like to check the Yellowstone.BGL just for the practice. How do you disassemble the file in LWMViewer? I can't seem to find a button to click on to do it. I'm missing something but can't find it.Wil

Hi Wil,remember my VTP2/LWM draft tutorial? ;-) It's the Export > Source function.Cheers, Holger

Hi..> Prefacing the two files with A and Z did the trick.:-yellow1 Yay!FS loads files according to priority in the scenery database first, then alphabetically within each folder. Yellowstone, being near the end, would have overridden anything loaded earlier. Normally this isn't a problem but my guess is that the cell is defined as explicit land instead of transparent, thereby zapping other lakes in the area. Probably done deliberately to mask out default lakes, but unfortunately yours went too.If you release your lake BGL with starting with something alphabetically after Y (like Z, for example :) ) it should work for most people even if they have Yellowstone installed.Glad it's solved :)Cheers,Jim

Hi Holger,Now that you mention it, yes. However, I'm having trouble remembering my name anymore.Thanks for the reminder.Bill, er, Wil

Howdy Jim,Thanks for the further explanation of what's going on. Sylvan Lake sits at the very edge of the cell so the small ponds just to the east appear.I thought that there would be a similar problem where the upper Yellowstone River enters the lake but I drew the river a ways on to the south yesterday and it connects with what I had drawn on the satellite image and appears along with some delta sloughs and ponds. What a relief!I need to take some time off and read Holger's tutorial again amongst texts.Thanks again for your help and guidance.Wil