I read the docs of dexie-export-import thoroughly, however I didn't find a way how to add onto the current database when importing the data. It either completely replaces the whole table or merges and overwrites any row with the same id.

What I'd like to do is to import the data with new id's, while keeping the old data in the table intact.

I'm trying to access the document from a elemental2.dom.HTMLIFrameElement but noticed that elemental2.dom.Window (via HTMLIFrameElement.contentWindow) has no document variable.
There is no chance to access an iframe document via elemental2.

This should be possible. Please see more details in the example at https://developer.mozilla.org/en-US/docs/Web/API/HTMLIFrameElement/contentWindow

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