Solution : https://service.sap.com/sap/support/notes/1249886 (SAP Service marketplace login required)
Key words : 
lost                     sap_bw release 700 sapkw70016 - sapkw70020 1274540 internal server error occurs, sap_bw release 700 sapkw70016 - sapkw70020 1278078 wrong variable, refresh                     sap_bw release 700 sapkw70016 - sapkw70020 1278749 key, highest patch availability solution general important information, sap_bw release 700 sapkw70011 - sapkw70019 1273024 variable values, incorrect                     sap_bw release 700 sapkw70016 - sapkw70019 1253575, displayed                     sap_bw release 700 sapkw70016 - sapkw70020, #                     sap_bw release 700 sapkw70015 - sapkw70019 1247374 rrk_kid_set, bi java patch require additional corrections, sps 17 sps 16 sps 15 important dependencies
Related Notes : 
       
| 1285404 | BEx Web 7.0: Corrections in bookmarking functionality | 
| 1281309 | Hierarchy texts not displayed after characteristics changed | 
| 1278749 | Key value not displayed for hierarchy node | 
| 1274146 | Message list item: Messages are not updated | 
| 1274084 | Bex Web 7.0: CLEAR_VARIABLES does not work correctly | 
| 1273024 | Variable values and filter values from bookmarks are lost | 
| 1272474 | Partially-compounded values are displayed incorrectly | 
| 1271159 | NullPointerException when refreshing a view | 
| 1270593 | Input help: You cannot exclude selection | 
| 1270294 | Inital display of hierarchy selection when hier. is inactive | 
| 1270249 | Hierarchy node variable is not transferred: Planning | 
| 1269411 | Excluded sel. for compounding has non-compounding effect | 
| 1269357 | Filter pane: Maximum number of characters ignored | 
| 1267585 | StackOverflow while retrieving infoprovider documents | 
| 1267445 | SAP BI Export Library: Symbol TrueType Font Compatibility | 
| 1266745 | Arithmetic Exception - Divide by Zero - Analysis Item | 
| 1265740 | Export of list of conditions and list of exceptions | 
| 1265421 | Characteristic ... has no master data for "..." | 
| 1264531 | Filter looks strange after drag and drop | 
| 1263854 | Display axis as hierarchy: Chart displays nodes | 
| 1263602 | Info field: Missing hierarchy information | 
| 1261761 | Variant saved with one ER is shown in all Reports | 
| 1260626 | Open dialog Web: Views are displayed along with Queries | 
| 1260252 | Ad hoc formulas:Ranking order on axis incorr.for query views | 
| 1260188 | Properties pane: UnsupportedOperationException | 
| 1260133 | Variable screen Web: Variable value parser error | 
| 1260042 | Values of Web item parameters not retained | 
| 1259019 | Multiple values not visible in document assignment | 
| 1258608 | NW 2004s BI Web Reporting: Filtering result via context menu | 
| 1257956 | NW 7.0 BI WEB: Exception in currency translation dialog | 
| 1257254 | Query view does not take currency translation into account | 
| 1257235 | BEx Web Dialogs in Business Client | 
| 1256788 | Ad hoc forms: Problems when bookmarks are loaded | 
| 1255346 | Dropping hierarchy member onto member only works 2nd time | 
| 1254755 | Message item: Incorrect height when messages are suppressed | 
| 1254029 | Decimal places ignored when there are values of 0,0 | 
| 1253745 | Incorrect operator sequence in formula editor | 
| 1252550 | ClassCastException after choosing setting button in selector | 
| 1251121 | BEx Web 7.0: Display Support Information in Error Pages | 
| 1250308 | BEx Web 7.0: Nullpointer in Message class | 
| 1249659 | BEx Web 7.0: Cache-validity is not taken into account | 
| 1241335 | BEx Web 7.0: Cancel in Variable Screen removes Variants | 
| 1178516 | Analysis modification exception occurs displaying documents | 
| 1177040 | BEx Web 7.0: Save As in KM - NullPointerException SPS 17/10 | 
| 1174565 | BEx Web templates: JavaScript error in Enterprise Portal |