Oracle streams - lost archive logs

We recently had a problem when we lost the archive logs from the source database before they could be applied to the destination database..... don't ask how or why OK... enough already!

I spent ages trying to figure out how to reset the scn on the capture process to get the whole thing up and running again ( having manually resynced the tables). Turn out the way to do it was to drop and recreate the capture. I used drop_unused_rule_sets => true which meant I had to recreate all the associated rule but you may be able to get away with just dropping and recreating the capture.
i.e.

BEGIN
dbms_capture_adm.drop_capture(capture_name => 'capture_e1strm'
, drop_unused_rule_sets => FALSE
);
END;

followed by

BEGIN
dbms_capture_adm.create_capture(queue_name => 'capture_e1q'
,capture_name => 'capture_e1strm'
,source_database => 'ecit1'
,use_database_link => TRUE
);
END;