How did you do that? If I can get it to play then I might not do the wardens before the winter palace
I'll tell you how to do it, but you have to alter your save files, so be VERY CAREFUL.
And if you're playing the game on a console, you won't be able to do this, either.
I picked out a save between finishing the Winter Palace and just before Adamant.
FluffyNinjaLlama was nice enough to offer these instructions in the comments of the video above: "You have to set BOOL flag 8793907F8149A345BFFE7BFAE33101A2 from False to True"
I used the save game editor by Ehamloptiran found here: http://daitools.free...flags-t277.html
Ehamloptiran's Warning: "Be warned, very little checking going on, so very easy to break things, always backup and dont save over the same save."
After backing up all my save files, I used the editor to change my save file as described. I fast-traveled to the garden, and the scene triggered on the first try.