Just a guess here, but apparently there is some information that is displayed in the first line of the memo that you do NOT want to show to all users, yet you DO want to save.
My advice is to store the information shown in the first line in a separate field and the memo info in another.
Recently, I gave advice on adding user info and time to a memo field. If that was you, I advise you to split this information into fields. One field that is a foreign key to your main table, two that is the username, 3 the time/date stamp, and 4 the actual memo field. Have this information presented in a subform on your main form.
You can hide the field of the user info or NOT include it when creating the subform.