making an in-order query

[Brian Whitman]

I have a non-Solr API that comes back with an ordered list of Solr  
unique IDs -- it's SQL sort on user votes for Solr docs.

I would like to quickly retrieve those Solr documents in the order  
specified by the other API and run it through the xslt response writer.

What sort of query can I do here?

id:A id:B id:C id:D

*usually* works, but I have seen D appear first in the results for  
certain queries.

Is there a query I can do or a better way to accomplish this?