--- /dev/null
+BEGIN;
+
+ALTER TABLE acq.invoice_item_type
+ DROP CONSTRAINT aiit_not_blanket_and_prorate,
+ DROP COLUMN blanket;
+
+DELETE FROM acq.invoice_item_type WHERE code = 'BLA';
+
+COMMIT;
--- /dev/null
+BEGIN;
+
+ALTER TABLE acq.invoice_item_type
+ ADD COLUMN blanket BOOLEAN NOT NULL DEFAULT FALSE,
+ ADD CONSTRAINT aiit_not_blanket_and_prorate
+ CHECK (blanket IS FALSE OR prorate IS FALSE);
+
+INSERT INTO acq.invoice_item_type (code, blanket, name) VALUES (
+ 'BLA', TRUE, oils_i18n_gettext('BLA', 'Blanket Order', 'aiit', 'name'));
+
+COMMIT;