Swap parents
Swap parents https://help.heredis.com/wp-content/themes/corpus/images/empty/thumbnail.jpg 150 150 Heredis Help Knowledgebase https://help.heredis.com/wp-content/themes/corpus/images/empty/thumbnail.jpgSometimes you make a mistake and enter the mother instead of the father. The Ahnentafel numbering is false. It is therefore useful to be able to rectify this mistake.
Since Heredis 2021, 
it is no longer necessary to unlink each parent to connect the right ones, click on the Persons menu > Swap Parents.
An alert message informs you of the upcoming action and that the change will apply to all siblings.
Confirm by clicking on Yes. Et Voila !
Important: the place of the father on the left and the mother on the right is thus made by convention. For your GEDCOM exports, it is important to respect it.