how to copy the dates for the published version into the current working version

Hi All,

i did the below steps:

1- create working version

2- published the version and baseline

3- enter actual dates and progress

4- need to publish new version so went to the working one and made the required edits then Published the working version.

after i published it i found the old dates not the dates of last published version tasks.

our business requierment is to create many version whlile the project is going.

Thanks in Advance