No,
Mickey's Soundsational Parade is the afternoon parade at Disneyland. With PTN in refurbishment until November, it's currently being performed twice per day in mid and late afternoon at Disneyland.
Why do you think that? There's no recent precedent (Late 1990's to 2016) for Disneyland cutting a parade and replacing it with nothing. If anything, Disneyland management appears to have just gone to the trouble and expense of borrowing (stealing?) the MSEP from WDW so Disneyland has a night parade to run this winter while Paint The Night goes in for its post-Christmas refurbishment. Disneyland's current management seems committed to multiple daily parades, with various day and night versions during peak attendance months.
Thank you. That info seems much more plausible and understandable.