The common response to PLN linking problems in 8.0, 8.1 and 9 is to publish the views as PMKs and relink to those. This "old way" is rock solid reliable in my experience. Unfortunately projects that have been set up this way are a bit more trouble to upgrade to AC10. If you are planning to upgrade to 10 anyway (highly recommended IMHO) you may want to do it right away and avoid the PMK stuff.