Store operations
Use TaxPack on legacy WooCommerce order storage
An older WooCommerce store may still use WordPress posts tables as its authoritative order storage.
Inspect the source record
Check WooCommerce's Features screen before attributing a report difference to storage; inspect a known source order through the admin.
Build a focused report
Generate a focused TaxPack report with the same filters you would use under HPOS.
Read the result
TaxPack uses WooCommerce order APIs so the report can read legacy orders without needing a different plugin edition.
A concrete example
A store that has not enabled HPOS can still review a refund and its recorded tax lines in the free plugin.
Avoid this mistaken conclusion
Do not migrate storage as a troubleshooting shortcut without backups and WooCommerce's compatibility checks.
Official references
These focused notes were drafted with AI assistance and checked against TaxPack behavior and the linked documentation.
These guides explain reporting workflows. TaxPack does not provide tax advice, calculate tax payable, or file returns.