schema diff tool problem with owner statements

I'm trying to compare 2 schemas (devschema is the source and testschema 
is the target) and generate a script that can be run on the target that 
will create the missing tables.  I ran the schema diff, and it generated 
items like this:

CREATE TABLE IF NOT EXISTS tablename
(
fields, etc
)
TABLESPACE pg_default;

ALTER TABLE IF EXISTS public.tablename
     OWNER to devschema;


When I run the script on testschema, I don't want it trying to alter the 
owner of the table because that statement will fail anyway.

I found a setting in "preferences" called "ignore owner", and set it to 
true (If set to True, then the Schema Diff tool ignores the owner while 
comparing the objects.)

However, this setting has no effect.  The alter table statements still 
get generated, and I am left to remove them manually.

If there is something I'm doing wrong please let me now.  I swear this 
setting worked many months ago when I used this tool, but it seems to 
not be working now.

Version 6.1 (downloaded and updated today)

Thank you,

Wes