I manage a number of DNA profiles (for related individuals) across a number of sites:
- FamilyTreeDNA (5 profiles)
- MyHeritage (5 profiles)
- LivingDNA (2 profiles which will increase to 5 in the near future)
- Ancestry (1 profile)
- 23andMe (1 profile)
- Gedmatch (5 profiles)
Each profile has a plethora of matches at each site; some of these overlap because the match also has their profile at multiple sites. Some of the matches have been correlated with an MRCA; some have not (yet). (There are also sets of significant 'negative' results -- profiles that could be expected to match under some scenarios and don't).
And I also have a couple of totally unrelated profiles that I manage as a favour to people who tested at my behest but turned out not to be related.
I want to establish a method of working (including record keeping) that allows me to work across the multiple sites to assess likely connections -- if Profile A on site X matches profile B, and B also tested at site Y and matches profile C who hasn't tested at X but did test at Z and matches profile D there... and the matching chromosome segments all overlap...
I'm aware of the product Genome Mate Pro but I want to understand the possible (and best?) ways of working before grabbing a tool which may or may not be the right solution. (Although I don't discount using a tool that's "good enough" and adjusting my method of working to match the tool, you first have to be able to assess whether something is "good enough").
So: What are the key requirements and considerations for a process or tool(set) to support working with multiple profiles, multiple matches, multiple sites? (I am not looking for a software recommendation, but for guidance on requirements and process that may lead to a software selection or to something else).