I had this on a calculated field on a custom form. It's set to a specific status name.
IF(ISBLANK({INPD Status In Progress - Time Stamp})="TRUE"&Status="INP",$$NOW,INPD Status In Progress - Time Stamp}).
It got accidentally taken off the form and when I put it back on the form, it took it out of the calculation section. Luckily, I had it in the description but when I went to add it back into the calculation section, it gives me the invalid error. Any ideas on how to get it back for reporting?