Many ways to do this but I actually suggest a different path
then trying to concern yourself with the FocusManager.
You say it submits to a MySQL server. Are you using a
Middleware server or submitting directly to a local server.
If you are making webservice or remoteObject calls then you
can send the ID back in the return and have that trigger another
call to get the data and place it into your dataProvider. Or even
better might just want to have it send that record back along with
If you are not using any type of Middleware I would suggest
you do. Otherwise you may just want to write a stored procedure
into the MySQL Database so that when the submission happens it
inserts it and then automatically performs a select on that record
and sends the query back.
This way the same script that submits the form can be waiting
for the returned data to inject into a dataProvider that your
second Module is ready to use.
The dataProvider could simply be a valueObject or you could
use the command pattern to pass data back and fourth.