Audacity 4 documentation · Primary-source explanation; examples are illustrative. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Decide what should move after the cut
Audacity current Edit documentation distinguishes leaving a gap from closing it by moving later audio. It also distinguishes closing within a track from closing across tracks. A successful deletion can therefore produce an unwanted result if the wrong scope was chosen. Before cutting, identify which later elements must keep their relative alignment and which should remain at their absolute timeline positions.
Use two aligned events as a check
For an original example, two microphone tracks contain the same conversation and share a recognisable clap later in the timeline. Removing an interval and closing the gap only on one track moves that later clap relative to its counterpart. On a working copy, mark the corresponding event before editing and choose the appropriate explicit command for the intended scope. Recheck both event positions afterwards, rather than relying on a selection highlight to prove alignment.
Account for remembered preferences
The documentation explains that the initial gap behaviour choice is remembered and can be changed in Audio editing preferences. Explicit cut and delete variants remain available, so inspect the actual command when following an older instruction which simply says Delete. Audacity 4 also replaced the earlier Sync-Lock workflow. Undo an unintended result promptly and compare with the saved original. Keeping separate tracks aligned with each other still requires a separate check against any external video timeline which was not edited with them.