[Exist-open] Indexer Question

[<tea...@em...>]

hi,
i'm confused about how the indexer works - i have a collectionon 
loaded. i just
shutdown and changed the conf.xml file to read from a different 
stopword list
and to exclude certain attributes. when i startup again, does the 
indexer
reindex all of my documents are do i need to readd these documents for 
them to
be indexed?
thank you!
susan