Why are the Alignment Statistics for a TMX file not 100%?

Following any TextBase Builder operation (building a new TextBase or appending to an existing TextBase), you can select the task from the Scheduled Operations window and click the Details button to view the results of that task.

When importing TMX files, the alignments will be perfect as the alignments are taken directly from the translation units in the TMX. However, if you are importing a multilingual TMX file, the percentages displayed in the Alignment Statistics window represent the percentage of alignments for that language pair out of the total number of translation units.

For example, if only half of the translation units in the TMX file contain both English and German, the alignment percentage between English and German will only be 50%.