I removed my initial post because the advice I provided there I now discovered in light of subsequent replies is out of date. As this is of general interest to all of us editing back and forth between LR and PS, I decided to do a test from the ground up, step by step to see exactly what happens. The bottom line is that everything updates in LR from PS as it should, except there is just one slight kink in the procedure toward the end that John and Wayne correctly identified. Here is what I determined, just now, using Photoshop CC 2019 and LR Classic CC version 8.2 together; this can be confusing, so follow the sequence of moves carefully:
Editing sequence:
Open photo in LR 8.2 (Figure 1); wall is orange/brown (shot in Angkor Wat Cambodia 2004).
Go to the LR Develop Module and stay there, but No editing.
Go to Edit In > Photoshop CC 2019 (Figure 0)
In PS, add a Color Balance Adjustment Layer and shift Cyan to -43
Save Image, but do not close Photoshop.
Revert to LR, new TIFF-Edit image (left one in filmstrip) looking Cyan appears in filmstrip (Figure 2)
Revert to PS and reset Cyan Color Balance to zero so wall looks brownish again. (Same as Figure 1)
Save photo.
Revert to LR, and the TIFF copy has been updated. (Figure 3)
Now, shut down PS, but leave LR open.
Re-open PS and select the same TIFF (from the File>Recent menu).
Reset the Cyan Balance to -43 so wall looks Cyan and Save. (Figure 4, next reply)
Revert to LR, it will show that nothing has changed. (Same as Figure 3). So here's the "kink":
Deselect all photos in LR by clicking in an empty part of the filmstrip, then click on the one edited in PS.
The filmstrip view updates (Same as Figure 2).