QB Issue Resolution:

If you mean you made a copy of the company file in the finder and renamed the copy then, no, it won’t hurt. Everything has been copied.

BUT! BUT! If you made a mistake and somehow you end up deleting the ONLY copy of your company file then, yes, it will hurt! Very much!

Consider the old copy a backup. Burn it to a CD-ROM. File the CD-ROM. Then delete the old copy from your hard drive.

If you haven’t already, turn on the backup features in QuickBooks->Preferences. Have backups automatically made when you quit the app. Save them to an out of the way place. Better yet save them to MobileMe or 2nd hard drive or another computer.

Storage is cheap. Even the QuickBooks program is cheap. The data for your business, which you have painstakingly spent hundreds of hours entering over time, is valuable. Back it up! Hard drives die!

Resolution for Issue 'I changed the name of a company and now it appears I have the old company file and the new company file when I go to File- Company. Will it hurt to delete the file with the original name?' available: Yes (Solved).
Source: Intuit Community forum.

I changed the name of a company and now it appears I have the old company file and the new company file when I go to File- Company. Will it hurt to delete the file with the original name?: 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.

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