Solution : https://service.sap.com/sap/support/notes/681153 (SAP Service marketplace login required)
Key words :
snp time series data, /sapapo/om_lc_upgrade_3x_40 program, /sapapo/om_lc_upgrade_3x_40, import data, data disappears, existing infocube, earlier stage
Related Notes :
681010 | /SAPAPO/OM_LC_UPGRADE_3X_40: Problems during upgrade |
603852 | Additional information about upgrading to SAP SCM 4.0 |