Thank you, anything could be helpful, since Intuit developers do not address this issue.
This is 2-partners partnership LLC.   
Last year's Capital: Partner A: 13279, Partner B: 35,066 (Total capital 48,345)
                               Capital %:  A 50      B 50  (at the end of 2017)
Beginning Percentage: 50   50
Partner A does the most of business work.  Partner B does administrative work.  Partner A withdrew lots of money from account during 2018.
To protect A's basis, A changed the percentage of PL (Profit 50 to 90, loss unchanged, Capital 50 to 90)
CY Profit shares:   Partner A (90%) 39,884           Partner B (10%) 4,432
(Non-deductible expense adjustment): Partner A 189,  Partner B 22
Ending percentage of 2018: Partner A: 90%     Partner B: 10%
Partner A withdrawal: 30,847            Partner B withdrawal: 1,929

In the Basis worksheet, all of these numbers are entered.  But the serious problem of ProConnect Tax online program is that it CHANGED the beginning capital amount of each partner, and calculated the beginning capital that shouldn't be changed, by using the ENDING percentage of 90% and 10%.

And there is no place where you could overwrite or manually enter each partner's Beginning Capital Amount (other than percentages, but the beginning percentages are not used, and program uses ENDING percentages only).

What do you think?  Am I missing something, or would you know something that fixes this problem?