If you regularly import FECs throughout the year but want to freeze the periods that have already been presented (so the figures don't change when importing a newer FEC) and apply the differences to the following months, you can do this via the FEC Editor module.
To do this, follow these steps:
1. Go to the FEC Editor on the import page:
2. Go to "Combine 2 FECs":
3. Import your old FEC (the one whose data you want to freeze) and select the period you want to freeze:
4. Upload the second FEC (the most recent one) and select the period you want to add:
5. Choose the month to which you want to allocate the differences between the two FEC versions:
6. You will then have the option to download a new FEC generated by the platform, which will be a combination of your two FECs and will consider the characteristics you have defined.
You will then be able to import this new FEC into your projects as usual, and the period you wanted to preserve will remain frozen.