What is a key focus of the NPSP Data Import with regard to custom unique IDs?

The focus on the NPSP Data Import regarding custom unique IDs centers on the limitation in matching against encrypted fields. When working with encrypted Contact fields, NPSP Data Import is unable to match records based on these fields. This is important because unique identifiers are crucial for ensuring that records from different systems can be accurately reconciled, and encryption complicates this process. Therefore, acknowledging that NPSP Data Import cannot utilize encrypted fields for matching reinforces the understanding that care must be taken when planning data imports and how identifiers are utilized within the platform.

The other options suggest possibilities that do not align with the functionality of the NPSP system; hence, recognizing the limitations is vital for effective data management and maintaining data integrity throughout the import process. Understanding this limitation aids consultants and users in planning their data strategies accordingly, avoiding potential issues that could arise during data import scenarios.