Returning from the Manage Data of a Stream shouldn't clear searches that got you there
In Sequential Data Store if you search and find a stream and then view the data of that stream, when you press to go back to streams it removes your search. It would be ideal to keep the search there and the results of that search (incase you selected the wrong one and can only tell by the data you are looking at). In the case of nonsimple queries this is incredibly frustrating.
Other things that would help would be to able to do stuff similar to the API console where you could have a history of searches, and be able to favorite certain searches that are common.