Wyverns maps are now to be found in the atlas:

Which one you should have doesn't just depend on the number of add-ons/annuals, but which ones specifically. Not every style installs a file there, even if it would have made sense to have it, but it is a manual process making these in the first place, and I suspect they are often overlooked.

Here's the list of my files. I've got absolutely everything installed. You can check with my list and see if there is anything missing that you think you should have depending on your installed products. (The CSUAC, Bogie, Digital marked ones comes from the community symbol packs, and are not standard PF files.)

CA Portrait.FCW
CA116 Scorching Sun.FCW
CA132A Bitmap Fills.FCW
CA148 Moody Mansions.FCW
CA149 Bitmap Fills.FCW
CA150 imperial fills.FCW
CA150 metric fills.FCW
CA159_AlexandriaBitmapFills (metric).FCW
CA159_AlexandriaBitmapFills.FCW
CA163 Bitmap Fills.FCW
CA24_ReliefFills.FCW
CA27_FillStyles.FCW
CA50 Bitmap Fills.FCW
CA60A_TextureFills.FCW
CA62 Fill Styles.FCW
CA63 Bitmap Fills Metric.FCW
CA63 Bitmap Fills.FCW
CA67 Bitmap Fills metric.FCW
CA67 Bitmap Fills.FCW
CA69 Bitmap Fills.FCW
CA70 Bitmap Fills metric.FCW
CA70 Bitmap Fills.FCW
CA71 Bitmap Fills.FCW
CA94 Bitmap Fills metric.FCW
CA94 Bitmap Fills.FCW
CC2 Pro overland.FCW
CC3 Bogie Overland.FCW
CC3 CSUAC.FCW
CC3 Digital Overland.FCW
CC3 Digital Settlements.FCW
CC3 Digital Structures.FCW
CC3 dungeon.FCW
CC3 overland.FCW
CD3 All Bitmap Fills.FCW
CD3 Bitmap Fills.FCW
CD3 Bogie City.FCW
CD3 Digital Settlements.FCW
Cosmographer.FCW
DD3 Bogie Dungeon.FCW
DD3 CSUAC Battlemaps.FCW
DD3 CSUAC Dungeons.FCW
DD3 DA Battlemaps.FCW
DD3 DA Dungeons.FCW
DD3 DA Modern.FCW
DD3 Digital Dungeons.FCW
DD3 Dungeon Color.FCW
Dioramas 3 Bitmap A.FCW
Dioramas 3 Bitmap B.FCW
Dioramas 3 Krom Village.FCW
Dioramas Pro.FCW
RPG Art Kits.FCW
SS2 Bitmap A.FCW
SS2 Bitmap B.FCW
SS3 Bitmap Fills.FCW
SS3 Overland Vector Fills.FCW
SS3 Vector Fills.FCW
SS4 Dungeon of Schley w Forlorn Cottage.FCW
SS4 Dungeon of Schley.FCW

Just edit your post, remove the attachment, and insert the image using the image button.

Looks great, but you seem to have attached the image instead of inserting it into the post....

Yea. The default behavior of drawing tools and symbol sis to pick their own sheet. This can seem weird/annoying at times, but generally one tends to end up putting things in the wrong places much more often if they didn't do that, so the net result is that this behavior is quite nice.

Note that (almost) all these tools are prefixed based, for example the landmass tool in most overland styles look for a sheet name starting with LAND. If your current sheet does so, it stays on that, if not, it goes to the main LAND sheet. You can use this when you create new sheets to get the tools to put things where you need it.