Add information on the lack of support for legacy studies

docs/migration.md

@@ -91,6 +91,45 @@ includes datasets which are private.
 The `limit` and `offset` parameters can now be used independently, you no longer need
 to provide both if you wish to set only one.
 
+## Studies
+
+### `GET /{id_or_alias}`
+
+Old-style "legacy" studies which are solely based on tags are no longer supported.
+
+??? info "Affected Legacy Studies"
+
+ Only 24 old studies were affected by this change, listed below.
+ There is currently not yet a migration plan for these studies.
+
+ | id | name|
+ | --: | :-- |
+ |1 |A large-scale comparison of classification algorit...|
+ |2 |Fast Algorithm Selection using Learning Curves|
+ |3 |Multi-Task Learning with a Natural Metric for Quan...|
+ |5 |Local and Global Feature Selection on Multilabel T...|
+ |7 |Massive machine learning experiments using mlr and...|
+ |8 |Decision tree comparaison|
+ |10| Collaborative primer|
+ |11| Having a Blast: Meta-Learning and Heterogeneous En...|
+ |12| Subspace Clustering via Seeking Neighbors with Min...|
+ |13| Meta-QSAR: learning how to learn QSARs|
+ |17| Subgroup Discovery|
+ |20| Mythbusting data mining urban legends through larg...|
+ |22| Identifying critical paths in undergraduate progra...|
+ |24| OpenML R paper|
+ |25| Bernd Demo Study for Multiclass SVMs OML WS 2016|
+ |27| Compare three different SVM versions of R package ...|
+ |30| OpenML Paper Study|
+ |31| Iris Data set Study|
+ |32| Data Streams and more|
+ |34| Massively Collaborative Machine Learning|
+ |37| Speeding up Algorithm Selection via Meta-learning ...|
+ |38| Performance of new ctree implementations on classi...|
+ |41| ASLib OpenML Scenario|
+ |50| Hyper-parameter tuning of Decision Trees|
+ |51| ensemble on diabetes |
+
 ## Others
 
 ### `GET /estimationprocedure/list`