But how do I detach? If I go under Tools -> Attach to Another Project, there is no detach option. And if I select another project, it wants a login/userid/etc. Which I suppose I could invent/create, but hoping I'm just missing the 'detach' option somewhere?

Lost in translation? "Detach" is old fashioned, "Attach" is too. They're now called "Add" (A project or..." and "Remove" in the newer client, but either way, "Detach" or "Remove", look really hard in the screenshot and you'll see one of these two buttons that do the same. Select WCG in the project tab, and the action buttons on left go from grey to black text ;>)

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edit: Newest client manual link: http://boinc.berkeley.edu/wiki/Advanced_view

Work is never ''lost'' if it was reported by the client [you have observed it processing and fetch new work I presume]. Often members have 2 registrations, for I don't know why, and then the client is found to be attached to that "forgotten" second registration. Look in the BOINC Manager project tab where the active member name shows and if it is *exactly* the same as what you're now posting with: tejasp . If not, than you have a choice to make. Let it continue and look for your stats under the 2nd account or do the detach/remove and add/attach anew with the account you want the result to go.

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P.S. There was a website update yesterday which included a self help item on finding out if you have multiple registrations under the same email address: http://www.worldcommunitygrid.org/help/viewSelfHelp.do . You can also find out by signing out and follow the path where you indicate to have forgotten your member name. Enter the email address and a mail will be send with all the member names that were created using that email address [Legacy, it is no longer possible to create 2 or more accounts with the same email account].