When I attempt to move a multipolygonmultipart label, all of the labels except for the one I am moving disappear. For example, when I move the lower "2-C" label (Figure 1) the upper two "2-C" labels disappear from the display and map layout (Figure 2).
I have encountered a related, but different question that addresses single labels disappearing in QGIS 2, though not multipart labels in QGIS 3.
How can I manually move a label and preserve all of the corresponding multipolygonmultipart labels using QGIS 3.10?
Figure 1
Figure 2