Delete just one handle from anchor point

Here’s what I’ve found for converting an anchor point with 2 handles into one handle consistently. The difference is which handle you want to keep, the LEADING or TRAILING handle. Both use the Convert Point tool. On a Mac here so it’s the Option key.

To delete the LEADING handle, with the Convert Point tool selected, Option (Alt) click the center (anchor point) of a two handled anchor point. You're left with one TRAILING handle.

You, unfortunately, can not delete the TRAILING handle this way. You can however create a LEADING handle from a corner anchor point with the following work around.

To delete the TRAILING handle, staring with a two handled anchor point, with the Convert Point tool selected, click on the center. This will convert the anchor point to a Corner point (w/ no handles). With the Convert Point tool selected, Option (Alt) click the center (anchor point) and hold. Now drag away (forward) from the center creating the new LEADING handle. You will now have to recreate the curve but at least it's going the proper direction.

Hope this helps.
Bob

Here's how you do it in Photoshop 2022: https://graphicdesign.stackexchange.com/a/155752/359

Click on the undesired handle with the "Convert Anchor Point" tool and it should go away.

Maybe try the Convert Point Tool with the Alt key held down?

-Noel