No system information found in LMDB

Hello dear Forum,

I'm facing a problem when register an ERP6.0 IDES system(ES8) to solman 7.1SP11(SMP). I run rz70 in the ERP system and then I find this technical system in SLD, as follows:

But until now I haven't find this system in LMDB, the SAP_LMDB_LDB_0000000001 job runs normally,as follows:

I try to register other system to SMP and it works, the only difference is that I had registered ES8 to SMP before. But due to some issues I deleted the ES8 from LMDB several days ago, now I can't find it in LMDB anymore.

Dear experts, Do you know why this phenomenon happens and give me some advice?

Best regards and thanks for your help,

Pany