This morning I found a problem using MongoRestore 3.2.4 (Windows 64-bit binaries)

When I try to restore an archive dump from a database called BOB to a database called BOB_TEST (on the same server), MongoRestore doesn't do anything and the only output I get is:

2016-03-16T14:51:23.216-0500 setting number of parallel collections to number of parallel collections in archive (6)
2016-03-16T14:51:23.228-0500 creating intents for archive
2016-03-16T14:51:23.314-0500 done

However, it works if I try to restore from the dump files generated to a folder.

In other words, the following works:
1) mongodump /host:xxx /port:yyy /username:user /password:pass /authenticationDatabase:admin /db:BAB /out:d:\mongo
2) mongorestore /host:yyy /port:yyy /username:user /password:pass /authenticationDatabase:admin /db:BAB2 /drop /dir:\mongo\BAB

...but the following does not:
1) mongodump /host:xxx /port:yyy /username:user /password:pass /authenticationDatabase:admin /db:BOB /archive:d:\mongo\BOB.mongodb-dump
2) mongorestore /host:yyy /port:yyy /username:user /password:pass /authenticationDatabase:admin /db:BOB_TEST /drop /archive:d:\mongo\BOB.mongodb-dump