How to update migtable for over 1000 GPOs. Exporting GPOs to test lab

Hello,
I am using the following script to export GPOs from the production environment and import them into the test lab environment.
https://gallery.technet.microsoft.com/Migrate-Group-Policy-2b5067d8

My test lab forest and domains are different from production environment:

Production environment domain name: corp.condoso.com
Test lab domain name: corpqa.condoso.com (only two letters difference)

I tested this script in the lab by importing and exporting GPOs to the same domain name and GPOs were successfully recreated and linked!! But when I did export of the production domain which is different name, I was not successful in linking GPOs. I am getting this error with link path to the production domain. Of course the name as I mentioned is different from the lab and I think that's why it is failing.

Error: gPLink path does not exist .....path

Could you please advise on the easiest  approach to get all those links pathes updated. Maybe a switch in the script to automatically translate from corp.domain.com to corpqa.domain.com? Or how to export the MigTable with the switch and then do a replace for all domains?? That script didn't export the MigTable. I have a sample MigTable but don't know what to do with it. I also tried two other Microsoft scripts but could not make them work at all - as I am beginner with powershell. The script that I posted here was the only script I could make it work.

Thank you so much!
creative555Asked:
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compdigit44Connect With a Mentor Commented:
I believe he is referring to the migrationtable switch...

http://technet.microsoft.com/en-us/library/ee461044.aspx
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compdigit44Commented:
The VBScript you reference does appear to do what you are looking for. Did you double check your reference CSV file to make sure all fields are correct?

You can upload you CSV if you like so we can help you further review things..
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creative555Author Commented:
Yes. I see....

I am reading the following. It says that he left out this option to use migtable....what is this switch and how to use it?

Below is from the link:
Import-GPO has a switch to use a migration table, but it forces the option from the GUI which requires all accounts to be in the migration table.  I left this one as-is.  You can work around this by adjusting the migration table or fudging accounts
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