Add known problem - some users do not have lot information from eTrade even in the 1099

[hickeng]

Talking to Giampiero, I've found there are people where all the release and purchase confirmation docs are absent, and even on their 1099-B from eTrade there's no individual lot information.

The only place the data is recorded is in the history of benefits spreadsheet

• add to known problems
• add link to history of benefits location