Photoshop 27.10 appears to misread DCS spot channels that work correctly in 27.9.

I believe there may be a regression in Photoshop 27.10 involving DCS files with multiple spot-color channels.  I have a DCS separation file that opens correctly in Photoshop 27.9.1. The file contains a first plate that should be identified as a custom plate called something similar to "Shirt Plate", followed by multiple spot-color channels.  In Photoshop 27.9.1, the channels are interpreted correctly and the spot-color information is associated with the proper plates.  When I open the exact same file in Photoshop 27.10, Photoshop instead creates the first channel as the native "Gray" channel. Once that happens, the spot-color tagging/association of the subsequent channels is also incorrect.  For example, the channel structure in 27.10 appears as:  Gray #1 - Base White #2 - 3945 C #3 - Bright Red C #4 - 2728 C #5 - 446 C #6 - Highlight  The important issue is that the first plate should not be interpreted as Photoshop's process Gray channel. It should retain the custom plate information contained in the DCS file.  Steps to reproduce:  Open the DCS file in Photoshop 27.9.1. View the Channels panel. The custom first plate and subsequent spot channels are interpreted correctly. Open the exact same file in Photoshop 27.10. The first plate is now named/interpreted as Gray. The spot-channel metadata/tagging for the following channels is then incorrect.  Expected behavior: Photoshop 27.10 should interpret the DCS plate structure and spot channels the same way Photoshop 27.9.1 does.  Actual behavior: Photoshop 27.10 appears to treat the first DCS plate as the document's native grayscale channel instead of a custom plate, which then affects the interpretation of the remaining spot channels.  This is particularly important for screen-printing color separation workflows where each DCS plate represents a specific ink or print plate.  The same DCS file continues to open correctly if I downgrade/reopen it in Photoshop 27.9.1, so this does not appear to be an issue with the file itself.  Has anything changed in the DCS/EPS import handling between Photoshop 27.9.1 and 27.10, or is this a known regression?  I can provide a sample DCS file and screenshots comparing the Channels panels in 27.9.1 and 27.10 if needed.