Linking attachments to issues via api

[Christian Pavelka-Ulfendahl]

I'm migrating into jira server from another system, and it seems like the easiest way to manage all of the attachment files (mostly images but other types of files a well) is to build up the file structure and upload a zip file to the server. The issues will then be created via the api. The question is how I can link the attachments up to the acctual issues. Will jira automatically display the attachments once they're in the correct structure? Or do I need to update the issues somehow so they recognize the attachments?

Thanks!

/ Christian