Project Plan Blueprint Related Macros are Broken After Migrating from Cloud to Server

Issue Summary

Project Plan Blueprint/Template is only available in Confluence Cloud at the moment.

While importing pages contain macros associated with the blueprint, it will appear broken in Server. For example:

Storage Format:

<p style="text-align: right;">
  <ac:structured-macro ac:macro-id="8dfaf75c-4ee6-499e-9ca4-cc3ce3c0b60b" ac:name="create-from-template" ac:schema-version="1">
    <ac:parameter ac:name="blueprintModuleCompleteKey">com.atlassian.confluence.plugins.confluence-business-blueprints:projectplan-blueprint</ac:parameter>
    <ac:parameter ac:name="contentBlueprintId">c9730891-f70e-4123-9846-625308fc0dc9</ac:parameter>
    <ac:parameter ac:name="createButtonLabel">Create project plan</ac:parameter>
  </ac:structured-macro>
</p>

Environment

Tested with Confluence Server version 6.15.4

Steps to Reproduce

1. On Confluence Cloud, create a page with 'Create From Template' macro
2. Select Project Plan Template for the Template Name parameter
3. Export Confluence Cloud to a Confluence Server Instance
4. Check the page in Confluence Server

Expected Results

The macros will render and work as it should

Actual Results

The macros doesn't render because the blueprint module, com.atlassian.confluence.plugins.confluence-business-blueprints:projectplan-blueprint is missing

The below exception is thrown in the atlassian-confluence.log file:

java.lang.IllegalArgumentException: Unknown Blueprint: Blueprint id: c9730891-f70e-4123-9846-625308fc0dc9, module key: com.atlassian.confluence.plugins.confluence-business-blueprints:projectplan-blueprint, space: null

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available