BRRRR tool need field to accommodate before/after income increase

[Kennedy Taylor]

The BRRRR tool has one place for rental income. I can either put in the before rehab income for the 17 of 32 units that are currently rented or I can put in the post rehab income potential if all 32 of the units are rented. I'm trying to analyze the deal. I'm planning for a 6 month rehab time then refinance after 12 months. If I put the pre-rehab income in, the post rehab shows a net loss after refinancing. If I put in the post rehab income in, the planning amounts in the report generated with the BRRRR tool are artificially inflated. Please help me analyze this deal.