You really need to contact the CRA, or at least a tax accountant about this.

In the US, you close the books on the partnership filing closing tax forms for each gov’t entity you deal with.

Then you start a new set of books as the sole proprietor of a business.

Resolution for 'change business issue: 'my business is going from a partnership to a sole propretorship with in a year how do I change business #?' available: Yes.

The change business 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 change business issue yourself by looking for a resolution described in the article. If it is a complex change business issue or you are unable to solve the issue, you may contact us by clicking here or by using other change business support options.

For more information about resolving issues related to change business in Quickbooks/QBO or to get support for the issue 'my business is going from a partnership to a sole propretorship with in a year how do I change business #?', click the link below: