String trucation

[Nandakishore]

Hello ,

Trying to clean up below string using regex using expression (\w+)  : 

RE 001705 20004658.SE0008 VOLVO LOGISTICS AB ARHK-4, DEPT 5325, ARK 1 ...

While doing so the higlighted text is splitted into two strings 20004658 and SE0008 . 

I would like to retain as  20004658.SE0008 . Any help .

Thanks

[binu_acs]

@Nandakishore hope the pattern will be same for all the text inputs