I tested Gedcoms from several different places, and found that the only ones that reliably uploaded sources and filled in all the blanks were from Ancestry. Roots Magic would not import sources, no matter what I did, for example. Downloading my Gedcom from Ancestry to Roots Magic did not work. Add sources from Family tree to Roots Magic did not work, ect....
HOWEVER, I also found out on Ancestry Gedcom imports that in order for those sources to come across to wiki from Ancestry, you need to have added cited sources on Ancestry, and when you added those sources to your tree, you needed to make sure "Include citation" was checked.
Here is what that raw import looks like. Now it is a bit of a mess, but if you go to the bottom of the source list, and look at the REPOSITORY information, you will see the Citations of the repositories that are used.
Source: S-2108870073 Repository: #R-2144795297 Social Security Death Index Ancestry.com Publication: Online publication - Provo, UT, USA: MyFamily.com, Inc., 2006.Original data - Social Security Administration. Social Security Death Index, Master File. Social Security Administration.Original data: Social Security Administration. Social Security Death Inde Note:
When you go back to clean up, you can delete most of the junk, and reference your facts back to these Repository Citations, or preferably, find the same information on Family Tree, with a direct link to the item, an image, and a citation.
Maybe I should write a guide...