When a student has a 504 Plan and is being referred for special education, the record can exist temporarily in both the 504 and the Sped module..
On the MIS Summary page, unlock the record, select "504 / Pending Special Ed" This will allow the record to exist in both modules until the special ed eligibility has been determined.
If the student is not eligible for special ed then the student reverts back to the 504 module only; however if the student is eligible for special education then the student record would will remain in the Sped module only. It is possible to have an open meeting in both modules simultaneously.