Reindexing

[Azazel K]

Hi,
We have an over engineered index that we would be to rework.  It's already 
holding 150M documents with 94GB of index size.  We have High index/high query 
system running Solr 4.5.
My question -  If we update the schema, can we run reindex by using "Reload" 
action in CoreAdmin UI?  Will that regenerate the index according to schema 
updates?
Thanks,Az