We have a DW9 project migrated to DW10. One of templates started to throw errors on GetRelations. This was working fine on DW9
System.ArgumentException: An item with the same key has already been added. Key: 1236295|LANG1| at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior) at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 source, Func`2 keySelector, IEqualityComparer`1 comparer) at Dynamicweb.Ecommerce.Products.ProductRelatedService.GetActiveRelatedProducts(List`1 relatedProducts, String languageId) at Dynamicweb.Ecommerce.Products.ProductRelatedService.GetRelations(String productId, String variantId, String languageId, String relatedGroupId, Boolean activeOnly, String shopId, String countryCode)
Issue is related to the fact that our product is connected to 2 Related groups. Both groups have the same product - this is logically fine
But in DW10 there was a code optimization introduced that is not able to hande this scenario.
DW9 code - was checking 'activeOnly' products by simply geting each product by ID and then checking its Active state
DW10 code is trying to run GetProductsByKeys and then result put in a dictionary (this throws errors as we don't have unique keys)
In my opinion this optimization introduced a bug as now I'm not able to get my list of ProductRelated items
This would work without checking for products activity.
Please fix this issue.
