Overread
Searching for a flower
I forgot about Lal, though if I recall right her brain failed after a while, so highlights the very problems that the Daystrom Institute was suffering from in replicating the creation of a new living robot. According to this page Lore Lore's mind was in a box that was destroyed when the Enterprise D crashlanded in ST Generations. Although this latter bit of info is something somewhat "off-screen" so might be lore accurate but could be changed.
Either way its likely that the lack of any mention of them means that their minds were not accessible/suitable/usable in the same way that the back-up Data's mind was. Although it sounds like even the spare unit also encountered problems.
Either way its likely that the lack of any mention of them means that their minds were not accessible/suitable/usable in the same way that the back-up Data's mind was. Although it sounds like even the spare unit also encountered problems.