QB Issue Resolution:

men file>utilities>export>lists to iif

check mark the lists to be moved, save the export file, use the same menu tree but import in the other files

Resolution for Issue 'New to Quck Books. Loaded Vendor List for 1st Company. Have 10 companies created. How to easily load Vendor List from Co 1 to the other 9 companies?' available: Yes (Solved).
Source: Intuit Community forum.

New to Quck Books. Loaded Vendor List for 1st Company. Have 10 companies created. How to easily load Vendor List from Co 1 to the other 9 companies?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for 9 companies
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Error Recovery for 9 companies [Canada]
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