EZ Exporter can include the name of the bundle (created by the Shopify Bundles app) a line item is part of when exporting order data to CSV or Excel.

In the Shopify Admin's order detail page, this will be displayed under the line item next to the label "Part of:".

In the app simply select the field line_items.line_item_group.title to include this in your reports.

Other related fields:

• line_items.line_item_group.id (auto-generated globally-unique ID for the bundle per order)
• line_items.line_item_group.quantity (the bundle quantity)

Here's a sample of what the output will look like: