People enrolled through the Massachusetts Health Connector could once again lose their health plans this year as insurance carriers struggle to comply with the state’s eleventh-hour “dual track” solution to rescue the woeful Obamacare health exchange, a professional association warns.

“The plans are being asked to build two separate systems,” Eric Linzer of the Massachusetts Association of Health Plans told the Herald. “Building one new system was going to be challenging enough. It creates the prospect that plans currently on the Connector today may not be available because they may not be able to build some of this technology.”

The Connector announced yesterday it will simultaneously hire Virginia-based hCentive to replace the scrapped state system with its own off-the-shelf software, while working toward joining the federal Healthcare.gov in case that plan fails.