Prepare the files
- Export contacts, individuals, addresses, communication methods, and gifts from your current system as appropriate.
- Keep stable source IDs so gifts and people can be linked to the correct household or organization.
- Identify which rows are households, organizations, and foundations.
- Preserve separate first/last names, email and phone details, primary indicators, and recorded communication preferences where available.
- For gifts, retain the donor reference, amount, date, payment method, account/designation, and external transaction reference.
- Document date formats, currency, blank-field meanings, and any recurring-gift or membership data that needs special handling.

