EndNote X8 not importing all references from ACM-DL search


I’m using the ‘export results: endnote’ feature on ACM-DL to gather references from a fairly large search (over 1000 results)

Unfortunately, the .txt file that I’m given only contains 22 references. Any idea why this might be?

I could go through and manually import each reference, but clearly that’d be extremely time consuming.

Any help would be appreciated!