Investors & landlords

I have 6 brokerage accounts, each with around 600-1000 stock transactions.  I imported 4 of them into TT-online (via online sync), and now my online account hangs in the Stocks/1099-B, saying "Hmm, looks like we hit a slight snag in this section".

 

1) How do i remove some of this imported data, so my online account will lighten up and i can get to this section and enter summary transactions instead? 

2) Will TT-Desktop be able to handle the 6 imports and load of these 1000's of transactions?  If I will run into the same issue, I don't want to buy TT-Download, as all my prior years returns are online.

3) Can i enter the summary trades from each brokerage account separately, so I'll have 6 entries for Short-term Box A sales etc...  (These are reported on my 1099-B, and will be easier than consolidating).

4) I'm using TT-Self-Employed/Home-n-Business.  Where is the option to enter summary transactions?

 

thanks

Kiran