Not easily ...
You could try to grab, via phpMyAdmin, the records for a valid Discount Coupon and then edit them with the next coupon_id and insert them ... but you are getting into some tricky edit/import and could make a real mess if you mess up ...
Something like:
SELECT restrict_id, coupon_id, product_id, category_id, coupon_restrict FROM coupon_restrict WHERE coupon_id = '7';
And you would get something like:
INSERT INTO coupon_restrict (coupon_id, product_id, category_id, coupon_restrict) VALUES
(7, 0, -1, 'Y'),
(7, 4, 0, 'N'),
(7, 6, 0, 'N'),
(7, 9, 0, 'N'),
(7, 10, 0, 'N'),
(7, 11, 0, 'N'),
(7, 12, 0, 'N'),
(7, 13, 0, 'N'),
(7, 17, 0, 'N'),
(7, 18, 0, 'N');
then, do a global replace of:
(7,
with the next Discount Coupon coupon_id that needs the same restrictions, for example, Discount Coupon coupon_id 12:
(12,
to get:
INSERT INTO coupon_restrict (coupon_id, product_id, category_id, coupon_restrict) VALUES
(12, 0, -1, 'Y'),
(12, 4, 0, 'N'),
(12, 6, 0, 'N'),
(12, 9, 0, 'N'),
(12, 10, 0, 'N'),
(12, 11, 0, 'N'),
(12, 12, 0, 'N'),
(12, 13, 0, 'N'),
(12, 17, 0, 'N'),
(12, 18, 0, 'N');
then import that ...
Before attempting it, be sure to backup your whole table:
coupon_restrict