lol how to migrate discussion. Board into a new community site in SP 2013?

Hello I have a discussion board with threads and I have been asked to moved then into a community site instead.
How do I move  over the threads verbatim into the new community thread?

Thank you in advance.
colonelblueAsked:
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martushaProduct managerCommented:
You could try to Save discussion board as template (under list settings) with selecting "Include Content" checkbox. And after create a new list on community site using that template.
If it in the same site collection, the saved template will be visible automatically when you press add an app on other site.
If you community site is on different site collection, you need to copy that template from list templates gallery and paste it in list templates gallery on other site collection.
colonelblueAuthor Commented:
Hello and thank you .
Looks to be brilliant but it changes all the posts and replies with my name on it instead of the actual poster.
How to fix  please?

Thank you in advance.
colonelblueAuthor Commented:
Please help.
With the above solution , all users names are replaced with mine ( the administrator ).
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martushaProduct managerCommented:
Hi,
yes, I forgot about the issue with names of this method.

Then you could do it programmatically.
I found some resources for you:
https://social.technet.microsoft.com/Forums/office/en-US/c584e755-af9d-4725-8caa-d842a5dd15e0/programmatically-move-discussion-from-one-discussion-board-list-to-another?forum=sharepointdevelopmentprevious

http://microscoff.com/2010/08/25/moving-a-sharepoint-discussion-to-another-list/

http://sharepoint.stackexchange.com/questions/8600/moving-a-discussion-from-a-discussion-board-to-another (here is with powershell in answers)

Hope it will get you to the right way,

Or third party migration tools (but usually it costs).
colonelblueAuthor Commented:
Hello and thank you!!
How do you run the script?
Where?
Please forgive I am unfamiliar.

Thank you in advance.
martushaProduct managerCommented:
Copy script to notepad, change according your environment and save with .ps1 extention.
Go to sharepoint server, find SharePoint Management Shell and run it as administrator (very similar as cmd) and run your sccript:.
 . ‘LocalPath\ScriptName.PS1’ 

Open in new window

Read more:
https://technet.microsoft.com/en-us/library/ee806878.aspx 
http://get-spscripts.com/2011/03/running-powershell-ps1-script-files-in.html

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