There are any alternatives to export a po file from odoo and upload this po file to transifex manually?

How are modification in the official odoo modules synced with transifex?

How can i preserve the reviewed state of my finished translations after use "update source file" in transifex?

My not working workflow so far :

- export the po file via export translation in odoo

- upload this po file to transifex

- translate via transiflex

- if module code changes, export a po file via export translation in odoo again and use "update source file" in transifex 

the problem:

- reviewed state of finshed translations is lost after update source file

- problem not traceable, because  history information in transifex only time-delayed or some time not shown at all