The primary drawback to the direct changeover approach is that if the new system fails or needs modification, users may be without services while the system's bugs are worked out.

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The direct changeover approach involves immediately implementing the new system and discontinuing the use of the old system. This does not allow for a fallback option or temporary solution, so if the new system fails or needs modification, users may be left without services until the issues are resolved.

The Primary Drawback to the Direct Changeover Approach Is That