2 Documents into the same dynamically named folder.....

Hi All, heres what Im trying to do.....
I have a invoice file and a timesheet file - both pdf's held in separate folders at the same level. I need to rename them and save them both into the same folder...BUT the final sub folder needs to be named using the same format as the invoice....
So far I have managed to save the invoice to a format InvXXX.pdf using a reference in the existing filename.
Using "sort into subfolder", I move this into a sub folder of the invoice folder named from the date of invoice using custom tokens. YYYY_MM_DD - InvoiceXXX.
The timesheet comes into another folder and I have successfully renamed this to YYYY_MM_DD to YYY_MM_DD+4 Inclusive based on its created date so filename comes out at something like "2017_02_10 to 2017_02_14 Inclusive.pdf" - so far so good.....
I now cannot figure out how to move it to the subfolder that now holds the invoice....
Ive tried a rules against the timesheet folder that moves the timesheet to the invoice folder then added a rule to the invoice folders ruleset to sort into subfolder if its not an invoice but it errors with a source and target are the same message....
I fully appreciate that this may not make 100% sense so happy to clarify - been looking at it too long I think....
I have a invoice file and a timesheet file - both pdf's held in separate folders at the same level. I need to rename them and save them both into the same folder...BUT the final sub folder needs to be named using the same format as the invoice....
So far I have managed to save the invoice to a format InvXXX.pdf using a reference in the existing filename.
Using "sort into subfolder", I move this into a sub folder of the invoice folder named from the date of invoice using custom tokens. YYYY_MM_DD - InvoiceXXX.
The timesheet comes into another folder and I have successfully renamed this to YYYY_MM_DD to YYY_MM_DD+4 Inclusive based on its created date so filename comes out at something like "2017_02_10 to 2017_02_14 Inclusive.pdf" - so far so good.....
I now cannot figure out how to move it to the subfolder that now holds the invoice....
Ive tried a rules against the timesheet folder that moves the timesheet to the invoice folder then added a rule to the invoice folders ruleset to sort into subfolder if its not an invoice but it errors with a source and target are the same message....
I fully appreciate that this may not make 100% sense so happy to clarify - been looking at it too long I think....