Previously I was able to open different Excel workbooks as separate / independent workbooks.

Since I have upgraded to Excel 2016 (New PC) when I open 1 workbook and then try to open another workbook as a separate workbook excel links the two together therefore when you click on "Switch Windows" the 2 workbooks are listed.

The problem is that when I update a P&L spreadsheet, which takes about 4-5 minutes, with the "Add-in" for the Greentree Accounting package it will re-calculate both spreadsheets whereas I want excel to only recalculate the one spreadsheet whilst I work on the other spreadsheet. When I log into the excel add-in it will apply to both spreadsheets which indicates to me that even though I have opened them separately they are both linked.

Thanking you in advance for any help.

Paul...