The degree of grammaticalization is different for different combinations of -n- with local case suffixes, which is probably the reason why some of them were not mentioned in earlier works.
As a rule, adjectives in Beserman attract case suffixes in the case of substantivation or (quite seldom) in an attributive position under certain conditions (contrast, focus, etc.), copying the case of the noun they modify.
2011, Case Suffixes and Postpositions in Hungarian.--Proceedings of Head-Driven Phrase Structure Grammar 2011 Conference, Stanford 209-226.
In order to achieve the non-temporal meanings local case suffixes must be added to the Past Participle.
Third, the Masdar can take case suffixes. For example, it can function as the Genitive modifier of a noun (23).
In the nominal function the Masdar has only affirmative semantics; the case suffixes indicate its role in the clause.
He differentiates between postpositional case suffixes and postpositions that have not yet reached the status of case suffixes.
In Grunthal 2003 : 27 both the Votic comitative and terminative are qualified as case suffixes. Ingrian is not analyzed in this study.
Both the Votic comitative and terminative have certain features of case suffixes, as well as those of postpositions.
Finnish number and case suffixes
are all but perfectly productive with foreign (embedded) words.
However, case suffixes are usually uniform in their morphological form.
However, the only example for this origin is Hinuq / Tsez xexbe ('child', 'children'), where the plural marker -be is replaced by the oblique plural marker -za when case suffixes are added (see section 6.1).
In Section 3, I discuss common properties of and differences between case suffixes and postpositions, and conclude that the differences are purely phonological.
Case suffixes and postpositions seem to fit neatly into this analysis: If case suffixes are true suffixes, they should form a PWord with the stems to which they are attached, while postpositions are independent stems and form their own PWords:
(5) Prosodic structure of case suffixes and postpositions