I think I can explain my confusion a bit better.
Let's say again that two tables are linked by a match field called "org
name". If a layout displays table 2 data, then I can successfully
import new organizations into table 2, but then if someone is browsing
a layout of table 1 data, they won't see any organizations that were
imported into table 2, even if the "org name" match field value is
exactly the same for both tables. Furthermore, if a person adds a new
organization in a table 1 layout, they won't see that organization if
they switch to a different layout displaying table 2 data. I would
have thought that if the match field value was exactly the same in two
tables linked by that match field, then a record created in one table
would show up in layouts displaying info from either table, not just
the table where the record was created. But this this really boils
down to my not understanding what it means in a practical sense for
fields to be match fields.
What I don't want to do is have all my fields in one table, but rather
have separate tables but be able to view all organizations regardless
of which table an organization was created in.
As always, thanks in advance for the thoughtful feedback!