When creating a Pharow list, you can export contacts from the list to a CRM. Over time, some contacts on the list become obsolete in terms of the list criteria. They then appear as removed from the list in Pharow. However, it is not possible to know which contacts were deleted to update the CRM. Obsolete contacts from a list should be able to be automatically (or on demand) removed from the connected CRM. Without this feature, the quality of CRM content deteriorates quickly. A CRM enrichment feature cannot go without a CRM cleaning feature.