Makes sense. Thank you Stoupa. That makes me wonder how I would accomplish this scenario using IP 2007 and SP 2007:
1)FormA_v0 has been running on production for a while. This has about 200 promoted properties.
2)Some minor changes have now been made (no new properties) and tried out on an UAT site and acceptance obtained from the end users. Consider this new version as FormA_v1
To make a release, if I now publish FormA_v1 to PROD then , as you say, we will end up with duplicate columns. This is definitely a problem. So, what are my options?
Option 1) Should I download FormA_v0 from PROD and manually re-do all the changes and then re-publish to PROD?
OR
Option 2) Manually edit the manifest.xsf file of FormA_v1 in an editor and copy the xsf2:listPropertiesExtension section from PROD's FormA_v0 and then re-publish?
Thanks again,
Saurabh