Ignoring means that you will not be warned again (unless the disk file changes once more): if you save the document, you will overwrite the file on disk; if you do not save then the disk file (if present) is what you have.
Negearje betekend dat jo net mear warskôge wurde (of jo moatte de triem meardere kearen op de skiif wizigje): as jo it dokumint bewarje sille jo de triem op de skiif oerskriuwe. As jo net bewarje dan behâlde jo allinne de triem op de skiif (as oanwêzich).