On May 22, shareholders of Ecometry Corp., provider of the MACS catalog management system used by more than 300 catalogers, approved the sale of the company to Citrus Merger Corp., a subsidiary of Englewood, CO-based supply chain management software firm Syngistix, for $2.90 a share The deal is expected to close by May 31. The sale of the company comes as Ecometry faces having to migrate MACS users to a new platform. Hewlett-Packard announced in November that it would no longer support the HP 3000 platform, which runs the catalog management system.