When you relate one or more attachments to a service type, the relationship of attachments with other service types may also be changed.

To simulate the scenario, follow the steps below:

1. Create two or more attachments (Registering an attachment);
2. Create two or more service types (How to create a service for an SKU);
3. Link the attachments to a service type. Then create different relationships for another type of service.

When you save a relationship, you will notice that other relationships can be impacted.

Currently there is no workaround for this scenario. If necessary, open a ticket indicating which relationships need to be applied.