Yes. As long as the employee is converted to a permanent position without returning to the lower grade, the time spent on a temporary promotion is considered creditable service in the calculation of the employee's next WGI. The employee received an "equivalent increase" upon the temporary promotion. Processing a permanent promotion without moving the employee back to the lower graded position does not change the date of the "equivalent increase." Therefore, the waiting period starts on the date of the temporary promotion.
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