how filecoin+transfers data to existing sectors;

[lbj2004032]

how filecoin+transfers data to existing sectors; At present, my sectors are all available
I don't know whether these conditions are normal
It feels like the new sector is encapsulated after uploading data, rather than using the existing sector
In addition, does fil+need 10 times pledge？

$ lotus-miner sectors list | grep CC
...
149609 Available YES YES 3713968 (in 51 weeks 8 hours) CC
149610 Available YES YES 3713949 (in 51 weeks 8 hours) CC
149611 Available YES YES 3714486 (in 51 weeks 12 hours) CC
149612 Available YES YES 3714003 (in 51 weeks 8 hours) CC
149613 Available YES YES 3713973 (in 51 weeks 8 hours) CC
149614 Available YES YES 3714002 (in 51 weeks 8 hours) CC
149615 Available YES YES 3713992 (in 51 weeks 8 hours) CC
149616 Available YES YES 3714005 (in 51 weeks 8 hours) CC
149617 Available YES YES 3714009 (in 51 weeks 8 hours) CC
149618 Available YES YES 3714016 (in 51 weeks 8 hours) CC
149619 Available YES YES 3714044 (in 51 weeks 8 hours) CC
149620 Available YES YES 3713975 (in 51 weeks 8 hours) CC
149621 Available YES YES 3713983 (in 51 weeks 8 hours) CC
149622 Available YES YES 3714024 (in 51 weeks 8 hours) CC
149623 Available YES YES 3713983 (in 51 weeks 8 hours) CC
...

$lotus-miner info
...
Sectors:
Total: 156447
Proving: 4
Available: 147848
UpdateActivating: 1
SnapDealsAddPiece: 1
SnapDealsPacking: 1
ReplicaUpdateWait: 1