Infusionsoft API has a limitation that does not allow searching by First Name. Call activity logging – Companies cannot be assigned to Tasks, therefore creating a Task for a Company will save as a Task that isn’t assigned to anything.
If the integration supports caching, please note that cached integrations support up to 30,000 contacts. The live mode method would need to be used for larger directories. Performance will then be determined by a number of additional factors including network speed and application API specification.