Lose copied Value when un-filter is done

Hi,
Please find below more details:

I do CTRL+C in one cell in File A as I want to filter it in File B, but when I go to fIle B I verify that this is a filter applied in a certain column and I need to in-filter. By doing this I lose the copied cell and I need to go back to File A do the CTRL+C again and return to File B to filter that copied value.

This happens to me a lot of times and I would like to now that if there is a way to avoid to lose the copied cell when I do the in-filter.

Thanks,

Natalia