Relinking All Infopath Forms in Library after Migrating to SPONLINE

We recently completed migrating one of our site to Online, which consist of several form library with over 10k records utilizing Infopath forms.  After completion, i tried to open those documents, found out that it's still pointing to old site URL, and only opens with desktop infopath tool. 

Troubleshooting that i have done so far: 

1)Updated Data connection to a new Site URL.

2) Made sure that open with browser feature is enabled at library setting .

3) Tired adding new record, edit it and didn't have any issues with a new record.

4) Tried running Repair.ASPX ( RELINK feature) within Form library and were able to relink 3k out of 7 k records. and have doing it for over 10 times now. 

5) and now i am trying to relink every single records. And dont think its worth investing that time for relinking 7 k records individually. 

any help will be highly appreciated.

Thanks 

Ian