Convert Date field in text of Filename

[GIJS]

I have a lot of Files with equal Filenames but they differ on one place by a unique Date field: dd-mm-yyyy
How to change that field in the format: yyyy-mm-dd for all the Filenames in one stroke ?
Of course the files should stay unique from each other.

[Admin]

Hi, can you give a few file name examples, rename from -> to ? thanks

[GIJS]

OK a few names will do I think:
Portefeuille 09-03-2021 NL07FVLB7000275862.csv
Portefeuille 08-04-2020 NL07FVLB7000275862.csv
Portefeuille 07-05-2021 NL07FVLB7000275862.csv
Portefeuille 01-06-2021 NL07FVLB7000275862.csv

To rename in:
Portefeuille 2021-03-09 NL07FVLB7000275862.csv
Portefeuille 2020-04-08 NL07FVLB7000275862.csv
Portefeuille 2021-05-07 NL07FVLB7000275862.csv
Portefeuille 2021-06-01 NL07FVLB7000275862.csv

My wish is because the automatic ordering by Windows of listed Filenames. A nice feature.
The above group gives a chaotic presentation in the listing.

Thanks for your attention

Gijs

[Luuk]

If there is to be only 1-date inside all of the filenames, the Regex(1) can use a Match' and 'Replace' like...
(.*)(?<!\d)(\d\d)(-\d\d-)(19|20)(\d\d)(?!\d)(.*)
\1\4\5\3\2\6

But if some files can have many-dates, its best putting a checkmark in "v2", with a 'Match' and 'Replace' like...
(?<!\d)(\d\d)(-\d\d-)(19|20)(\d\d)(?!\d)/g
$3$4$2$1

[Admin]

To add to that, if the name structure is always :

<word><space><date separated by -><space><words>

then you could also use :

RegEx (1)
Match : %1 %2-%3-%4 %5
Replace : %1 %4-%3-%2 %5

Enable option "Simple" in RegEx (1) or it will not work.

[GIJS]

I was already very content with BRU but now the assistence of your both is most helpful.
I studied for the first time the Help document and was so confused that I couldn't find the solution.
Now your solutions are a help to understand the Help text.
It works indeed!

Thanks
Gijs

[Admin]

There are two great operation manuals written by a BRU user here:

viewforum.php?f=12

Very very useful and recommended!

[GIJS]

Thanks very much for the support.
Now I have a lot for selfstudying.
Regards
Gijs