I have found a problem with my A2X integration. Is there a way to delete all the A2X imports and then I can import them again once fixed?

You can use a deleter tool

https://get.transactionpro.com/qbo

Hello dan_lisa_connor-,

Welcome to Community!  QuickBooks Online provides the options you need, to complete your daily tasks seamlessly.  When imported items need correction, or removal, you can remove them from your books.  This enables you to make the necessary changes and import the items again, so your books remain accurate.  I would be happy to provide more information, so you're on the right track with your work!

Although some areas allow the option to batch delete items, other areas require you to delete them item one at a time.  Such as Journal Entries, as an example.  For this reason, I feel you would benefit by contacting our Customer Care team outside of Community.  With your consent, they can connect with you in real-time and navigate you through the processes, so you're able to import your data effortlessly.

If you have any other questions, please feel free to reach out.  We would be glad to help!