Installation and Upgrade > Installing and Configuring PTC FlexPLM > Updating PTC FlexPLM > Merging Client Overrides (Required)
  
Merging Client Overrides (Required)
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This procedure is extremely important. You might need to copy the new pages and add the customizations to those pages again to ensure that all updates are present.
1. Navigate to <Windchill> and then to the appropriate location based on your current release level.
If you are moving from a release earlier than PTC FlexPLM 9.0, navigate to /web-root/<Your Client Folder>.
If you are moving from PTC FlexPLM 9.0 or later, navigate to codebase/rfa.
2. Copy the contents of this folder to a temporary location.
3. Navigate to <Windchill>/codebase/rfa.
4. Copy the folders that apply to your customizations, such as JSP, JavaScript, images, and so on.
5. Use a tool such as Beyond Compare to see the differences in the files that you have overridden. Move the additions from the new PTC FlexPLM installation to the overridden pages.