When working with SalesForce source endpoint you may face a problem where columns with data type of 'Picklist (Multi-Select)' are replicated to target endpoint as NULL
Cause
This problem is usually caused since LOB support is disabled in task setting.
Resolution
To solve the problem you should enable LOB support in the task settings.
To enable LOB support: open Task settings-->Metadata-->Target metadata, and check the box for "Replicate LOB columns" choose a LOB size limit that matches the biggest LOB in the task tables.