Hello,
Morning everyone! I have the same exact scenario on that when we transition Forecast to Budget. We did the same, export and delete those line items that we know are just duplicates or values were -0-. However, I would agree that this is time consuming and there should be a better way of doing the process.
Most of our duplicates are from the Salary GL Accounts. I reached out to our Apptio contact and he mentioned about the Labor Summarization and Actuals Summarization in your Company Profile. It is recommended that these 2 should be summarized the same manner to align the line items. I am yet to do the testing as we are currently busy with 2020 Budget. But will keep you posted for any updates!
This might help you - Best practices: Forecasting
[IT Planning] Summarize financial actuals down to the following dimensions and/or attributes
And finally, I guess this is the reason why they created a Summarization / Grouping in Company Profile:
What's New in July 27, 2016 Release
Thanks,
Rose