The 1.4.6 Plugin update resolves issues affecting Order Items and variations support including:

• Order Items: Product Variation only containing a single variation and now populates properly for multiple variations assigned against an Order Item
• Order Items: Quantity showing as empty when using the unique order items formatting option
• Added Order Items: Product Category and Order Items: Product Tag to Orders export for more information about an Order Item

Here’s the full changelog:

• * Added: Support for multiple variation within Order Items: Product Variation
• * Added: Order Items: Category and Tags to Orders export
• * Fixed: Empty Quantity in Order Items: Quantity for unique order items formatting

Please update the base Store Exporter Plugin to the latest release to show the new Product Category and Product Tags columns within the Order Fields dialog.