How to remove a line from multiline equation?

[Manoj Rajagopalan]

Hi all,

  If I make a mistake in one line then I don't seem to be able to 
remove that line even if I remove all the contents in the cells that lyx 
creates for the LHS, the "=", and the RHS for that line.

  Is there a better way than to create a new multiline equation and 
copy over all lines except the invalid ones?

Thanks,
Manoj